home Aquarium How to deal with a flip flop in an aquarium

How to deal with a flip flop in an aquarium

Why does a Vietnamese harm?

Despite the fact that it is impossible to call the Vietnamese a parasite, since it does not feed on plant juices, nevertheless, this algae causes great harm to the aquarium flora. Vietnamese completely covers the surface of crops growing in water, thereby blocking their access to light, does not allow nutrients to pass to tissues, and this inevitably leads to the death of plants.

A flip-flop is rapidly spreading along the inner surface of the tank, it becomes unsightly and ugly. in just a month all the walls of the aquarium, decorative elements and pebbles are covered with a dark bloom, which is quite difficult to get rid of.

This type of algae is distinguished by exceptional vitality and tenacity, therefore, it literally “tightly” attached to the place of growth and holds on to it with all its might.

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How to get rid of?

The fight against flip flops begins with measures of mechanical impact on the affected areas. they need to be manually removed as much as possible. In addition, all stones and decorative elements affected by red algae should be removed from the aquarium, they should also be cleaned with a sponge, and then boiled in water for about half an hour. Usually, after such processing, the flip-flop is completely destroyed, and the jewelry can be used further.

Plants should also be removed from the container, all infected areas should be torn off, and then rinsed under running water. Keep in mind that you need to remove not only the leaves infected with Vietnamese, but also any old or rotten areas, since algae primarily affects the weakened parts of the plants. it is important not to give the parasite a single chance to attack again.

In addition, it will not be superfluous to work with all the remaining elements of the aquarium environment: clean and siphon the sand, treat the thermometers with alcohol, boil all the driftwood, and simply throw out the objects made of plastic.

The product is diluted with water and left in the resulting solution for 2-3 days. Usually, already in the first day, the Vietnamese begins to turn gray, and by the time the treatment is finished, it completely dissolves. Keep in mind that this may change the color of the object, but you simply have no other way to completely clean porous surfaces.

On the forums of aquarists, the topic of the fight against Vietnamese often arises, the brothers unfortunately share with each other ways to destroy this algae, but, unfortunately, no one has yet found a panacea.

Compositions based on borax and boric acid have a short-term effect. the Vietnamese stops growing and it seems that it is about to disappear altogether, but as a result, it remains to live and reproduce, and some higher plants, for example, cryptocorynes, lose their foliage. over, under the influence of these drugs, fish lose their appetite and begin to scratch on the soil and plant stems.

Copper and silver coins, which have a disinfecting effect, are also powerless. The widely advertised drug Algumin does not work either. on the third day after its use, dark bushes begin to crumble, after a week they disappear altogether, but after 3-4 weeks they return again, and with renewed vigor. they grow faster and inhabit the surface of an artificial reservoir much more aggressively.

Hydrogen peroxide has a good effect, but this is a powerful remedy, so many weakened plants simply cannot withstand its effects and “give up” first. According to experienced aquarists, there is only one drug that really helps to cope with Vietnamese in the long term, and that is Sidex. It is able to withstand red algae, but at the same time does not cause the slightest harm to the plants themselves.

During use, it does not accumulate in the liquid, but upon oxidation it decomposes into water and carbon dioxide. And also the safety of “Sidex” for fish and other inhabitants of the aquarium fauna has been proven. To treat the tank from algae, use 15–20 ml of the composition per 100-liter reservoir.

Any therapeutic measures must be accompanied by an adjustment of the water parameters. An increase in hardness up to 8 units helps in the fight against Vietnamese. for this, potassium chloride is added to the container at the rate of 2 ml for each liter of liquid. In addition, it was found that Vietnamese does not tolerate acidity above 7.5 pH. To create the right environment, you need to use baking soda. 1 g per 5 liters of water. Keep in mind that such changes have a detrimental effect on the condition of the fish, therefore, any changes in the properties of water should be carried out gradually.

And of course, water change helps in the fight against Vietnamese. if the algae is aggressive, 15–20% of the liquid should be changed every day until the enemy is completely eliminated.

Causes of occurrence

Reproduction in an aquarium of flip flops occurs for the following reasons:

  • lack of oxygen;
  • too strong current;
  • overpopulation of the aquarium with fish and invertebrates;
  • overflush.

First of all, the foliage of the slowest growing plants suffers from the red algae; in most cases, the attack of the red algae leads to their early death. She also prefers Anubias, Echinodorus and other similar plants with large leaves. usually they also cannot be saved, and the fate of the rest of the plantings can be fought for. It is noted that most of the affected reservoirs are illuminated by bulbs with a powerful yellow Spectra glow. such radiation creates an environment favorable for the appearance and spread of algae, and has the most adverse effect on the growth of higher vegetation.

Algae grows very quickly under the influence of the sun, so it is important not to allow direct ultraviolet irradiation, otherwise new foci of flip flops will appear at a high speed and all that remains for you is to say goodbye to the whole bushes. As practice shows, most often newly launched artificial reservoirs collide with algae, since there is no formed nitrogen cycle in them.

In addition, beginners usually do not have enough basic experience in order to deal with an adversity, since getting rid of a flip-flop effectively requires a clear understanding of the situation and an instant response. In general, according to experts, the appearance of any type of algae is the most common process, but it is very important to take control of it, only in this case the planted plants will have sufficient strength to take away food from the algae and cause their growth to stop.

A flip flop in an aquarium: what it is and how to get rid of it?

Vietnamese is a real problem that aquarists often face. This alga, appearing in the water, fills the entire space in the shortest possible time, interfering with the normal life of aquatic plants. Getting rid of such an uninvited guest will not be easy.

Description of algae

First, let’s look at definitions. Most novice aquarists believe that algae is any planting in an aquarium that is green or some similar color. However, this is not entirely true, only the lower groups of plants that are in swimming or clinging to decorative and other surfaces are classified as algae. Visually, they resemble moss, threads, bundles or mucus. In total, over 30,000 species are distinguished.

Vietnamese is a bundle, the size of the hairs in them does not exceed 2 cm. As a rule, they are located at the very tips of the leaf plates, as well as on the stems. In addition, it is fashionable to find algae on grottoes, artificial flora and decorative elements of the aquarium. Vietnamese refers to red algae, although it is rather brown, brown-gray and even black. The explanation is simple. there is a scarlet coloring pigment in her tissues, it is determined only empirically, reacting with alcohol, acetone or other solvent.

It is this pigment that fish farmers consider the real root of evil in the aquarium hobby, since even the most effective algae-eating inhabitants are ineffective, they simply do not eat those plants that contain such a dye.

Prevention measures

As the saying goes, it is easier to prevent a disease than to cure it, and in the case of a Vietnamese woman, this truth is 100% right. If red algae begins to multiply in your aquarium, the struggle will be long and difficult, and it is unlikely that you will be able to save all the plants. There is no need to hope that it is really possible to get rid of it forever. Whatever you do, sooner or later it will reappear in your artificial reservoir. Therefore, special attention should be paid to prevention, which consists in the following:

  • it is important to keep the number of inhabitants of the aquarium under control;
  • you need to monitor the main parameters of the biocenosis, paying special attention to the balance of nutrients in water and soil;
  • take the quality of the compressor and filtering devices seriously;
  • from time to time, evict from the tank all the fish that like to bury themselves in the ground and siphon it;
  • do not overfeed your fish. food residues, decomposing, form favorable conditions for the reproduction of red algae.

Any new plants that you plan to place in the aquarium should be carefully inspected. for this, plant them in a separate container with water and stir a little. If they are affected by flip flops, then you may be able to see small hairs on the leaves. If you do not trust the verification methods, you can carry out preventive treatment, for this, the whiteness is diluted with water in a ratio of 1 to 20 and the newly purchased bush is soaked for several minutes, after which the bush is washed and transplanted to a permanent place of residence.

Any methods of dealing with Vietnamese give only a short-term effect. The only effective way will be the formation of biological balance. As practice shows, creating a healthy microenvironment is not difficult at all. you just need to treat your pets conscientiously and responsibly.

For information on how to get rid of flip flops in an aquarium, see the next video.

Conditions for the emergence in the aquarium

The appearance of flip flops in the aquarium, according to experts, is almost inevitable if there is dirt and disorder in them: food debris at the bottom, fish excrement that has not been removed for a long time. But there are other reasons as well. Even neat aquarists can at one “perfect” moment detect signs of red algae if:

  • there is a lack of oxygen in the water;
  • the aquarium equipment creates too strong a current;
  • the blowdown is stronger than required;
  • a lot of inhabitants. both fish and plants.

The composition of the water also matters. If the water is high in nitrates and phosphates, this can become one of the impulses for the colonization of the aquarium with algae.

There is evidence that illumination with lamps with a yellow spectrum (and not luminescent) also makes a negative contribution: such light does not benefit the higher plants, but it accelerates the development of the lower ones. the Vietnamese grows as if by leaps and bounds. The same effect is obtained from exposure to sunlight, so aquarists are advised to protect their underwater world from their direct hit. find a place in the apartment where the sun’s rays do not reach directly.

Not all plants are equally affected by flip flops. Its first victims are plants that develop more slowly than others and are broad-leaved (for example, Echinodorus and Anubias). They certainly cannot be saved if the red algae have begun their dirty work. But for the fate of the rest there is a struggle.

Newly launched aquariums are most often at risk, because, as experts say, they do not yet have a well-established nitrogen cycle. In addition, in this situation, it is usually beginners who have to fight against a Vietnamese and they lack basic experience and skills. In a confrontation with a Vietnamese, a quick understanding of the situation and a quick response are important.

It is believed that the appearance of algae (any) in a new aquarium is a common process. It is only important to take control of it. Filtration of water, and sometimes its partial replacement, helps in this. When the plants planted by you begin to settle down and feel like masters, they will take away food from the algae and stop their growth. The situation will be resolved in your favor.

Remedies against flip flops and their average price

Preparations with boric acid and borax had a temporary encouraging effect: the Vietnamese woman slowed down and seemed about to disappear. However, in the end, it was not she who suffered, but the good plants (for example, the cryptocoryns lost all their foliage), and strange behavior appeared in the fish behavior. they lost their appetite, began to scratch their bodies on the stems of plants and the soil.

Copper plates and silver coins, which supposedly were supposed to make the composition of the water unacceptable for harmful algae, after a month of use did not give the expected result.

According to experts and aquarists-practitioners, the only drug that can fight and win is Sidex. It is considered the most effective against red algae and safe against higher plants. It does not accumulate in water during use, but oxidizes, breaking down into water and carbon dioxide. The effect of the drug on fish has also been tested: due to its bactericidal properties, it is a good prophylactic agent for representatives of the aquatic fauna.

A liter of “Sidex” costs about six hundred rubles. 15. 25 milliliters required for one hundred liters of aquarium water.

What is harmful to the aquarium

The Vietnamese woman makes all the inhabitants of the aquarium live by their own laws, and the person makes all his efforts to get rid of her. Many, after several unsuccessful attempts, simply lose heart from the inability to cope with the enemy.

The vitality of the flip flop has only to be amazed: it penetrates into the plant organism, firmly clings to the ground, tightens the walls in the aquarium and the parts of the equipment used with a dense layer. over, this alga is not a parasite in the direct sense of the word, that is, it does not feed on plant juices. She settles down on them as on a kind of foundation and thereby destroys living tissues. In addition, it deprives plants of sunlight and accelerates their death.

The owners of the collections of aquatic plants, who, with love, with large material investments, have equipped their home underwater world are especially acutely aware of the loss. and suddenly all this dies literally before our eyes.

Self-counteraction methods

They begin to fight red algae with mechanical measures. First of all, remove them manually. as many as possible. It is necessary to pull out of the water all the stones and objects intended for decoration, and now occupied by the Vietnamese. Do not rush to throw them away: after you clean them, boil them in water for twenty minutes, they can be used again.

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Remove the plants from the water and rinse under the tap (the water must be running). All diseased fragments must be removed, even if they did not suffer from red algae, but for some other reason. The fact is that your enemy primarily attacks old and sick, rotting plants. you cannot leave him a chance for another attack.

You also need to work carefully on the rest of the contents of the aquarium: the sand is cleaned and siphoned, the thermometers are treated with alcohol, the snags are boiled in boiling water, just like stones.

In addition to mechanical methods of struggle, there are scientific ones. Their purpose is to provide biological balance in the aquarium. This means that you must always control the number of fish and plants to avoid overpopulation of the aquarium. It may be necessary to abandon those fish species (by relocating them to another place) that dig too actively in the soil, contaminating it with both waste products and food residues. You also need to figure out about food. its amount should be sufficient, but not excessive.

Audit your green spaces. Try to plant the fastest growing species (hornwort, hygrophila, vallisneria). They will begin to actively feed, take useful substances from the water, without giving the algae a chance to “raise their head”.

[attention type = red] ATTENTION: plant a cladophora in your aquarium (the plant resembles a ball in its shape). Experts call the cladophore a competitor to dangerous algae, because this plant with great pleasure absorbs phosphates and other substances that support the life of algae, including red ones. [/ Attention]

By the way, the level of phosphates today can be controlled with the help of chemicals. These are the so-called absorbers. They are released in the form of granules, filling them with a mesh bag, placing them in the filter housing.


Beginning aquarists first need to define the concepts. In the minds of many, algae is all green (or some other color) in an aquarium. In fact, these are lower aquatic plants, which either cling to any surfaces or simply are “in free swimming”. Outwardly, they may look like moss, mucus, threadlike bundles. There are thirty thousand species in nature.

A flip-flop is presented in bunches, the length of the hairs in which does not exceed two centimeters. It is located on the tips of the leaves, gradually capturing the entire surface of the leaf, and also on the stems of plants, especially on their bends, on any decor items (stones, grottoes, artificial plants), on their irregularities, ledges.

Why was the Vietnamese classified as a red algae, because its color is dirty gray, brown or black? It all depends on the presence of special coloring pigments. In flip-flops, it is red and is found only experimentally, under the influence of alcohol or some kind of solvent such as acetone.

[attention type = green] REFERENCE: red pigment is the root of evil: algae-eating aquarium inhabitants who help a person to clean the glass house from uninvited guests are powerless in this case, they do not eat Vietnamese precisely because of the substances that are part of the red coloring pigment [/ attention]

Vietnamese is a type of red algae. The name indicates her geographical homeland. And the “victorious march” in other countries of the world began, according to experts, during the export of any plant products from the southeast of Asia.

Among the close relatives of Vietnamese are algae, which are grouped according to color. If Vietnamese algae are red, then there are also brown algae, blue-green, yellow-green and just green, and even golden.

[attention type = green] FACT: The Latin name for the Vietnamese is Audocinella. In addition, it is called the crimson, compsopogon and red beard. [/ Attention]

A flip flop in your aquarium: how to get rid of this scourge?

The Vietnamese woman is a real disaster for aquarium owners. This alga, once having declared itself, very quickly captures a vast living space. Many online aquarists’ forums literally explode with questions marked “SOS!” How to resist an insidious enemy?

Difference from a beard

The Vietnamese woman is often compared to seaweed called “black beard”, and sometimes even confused. Although there are purely external differences, which are quite easy to understand: the Vietnamese grows in the shape of a bush, and the beard resembles a fringe of long thin threads.

There are slight differences in lifestyle, addictions. The beard finds shelter in any part of the aquarium, and the Vietnamese woman chooses for herself (at least at the beginning of her victorious march) corners that are farther from the current, for example, stones, grottoes.

The Flip Flop By Chasebaits. Mesmerizing Bass Lure!

As for survivability, the Vietnamese woman is out of competition in this matter. It is very strong, tough and so “sticks” to any surface that it takes a lot of physical effort to get rid of it. It’s easier with a black beard in this sense.

[attention type = red] ATTENTION: Vietnamese, unlike other algae, can spend a month in complete darkness and survive. [/ attention]

Another difference: no one will eat a Vietnamese except snails (and even then not all, but only one or two species), and algae-eating fish can cope with a black beard.


Each new plant must be quarantined in order to avoid algae contamination of the aquarium. We must remember that Vietnamese people get infected “from the outside” and never neglect trifles, hoping for “maybe”.

If you have already had to deal with red algae at least once, keep in mind: everything you did to save your aquarium will not go to waste if you regularly change the water, which will not allow nitrates and phosphates to overstep the bar and create for algae favorable conditions. Well, cleaning of fish excrement should be done regularly, at least once a month to clean the soil.

[attention type = yellow] IMPORTANT: try to do without powerful blowing in the aquarium, which makes the water cloudy and very seductive for the insidious enemy, providing an excellent breeding ground. [/ attention]


This method is partially used during a biological procedure, but some are adopting it as a single measure. As an addition, you can heed a few helpful tips:

  • do not use sponges and scrapers that have already been used for cleaning: they contain bacteria, both useful and harmful;
  • be sure to protect your hands with gloves;
  • if plaque is difficult to wash off, try prying it off with a blade or remove it with an aquarium scraper;
  • if the decorations cannot be washed, dilute a small amount of bleach in water, soak them in it for about 15 minutes, and then rinse with boiling water.


This method is suitable for those who need to return the proper form to the aquarium in a short time. One of the most popular drugs is streptomycin. To use it, you need to boil water, and then dilute the powder in a small amount (3 g of medicine per 1 liter of liquid). The resulting mixture is run into a filter. Streptomycin acts quite quickly, and after a couple of days the walls of the container will be completely cleansed. Fish of such interference, as a rule, do not notice.

It should be remembered that during treatment it is impossible to do additional cleaning with activated carbon. And you will also have to promptly remove the remnants of algae so that they do not rot and spoil the ecosystem of the reservoir.

What it is?

Sometimes the slightest change in the appearance of the aquarium makes the owner panic, especially if the prerequisites for such changes were not observed. Green bloom occurs gradually, and it comes from a special type of algae that is always in the aquarium. These algae are called protococcus and xenococcus. Most of the time of their existence, they are harmless, and the green plaque obtained in the process of their vital activity is removed relatively easily by hand, or it is eaten by snails and bottom catfish.

However, if the ecosystem in the reservoir is disturbed, algae begin to multiply rapidly, and this leads to a variety of problems. Protococcus forms green dust that settles on glass and also covers the water surface. In advanced cases, nothing can be seen through the glass, and the wiped plaque appears again after a few days.

As for xenococcus, they parasitize on plant leaves, appearing in the form of dots. It is extremely difficult to remove overgrown spots, you have to tear off whole leaves. If you ignore the xenococcus, it will “bring” new inhabitants.

Freebie Friday: 3-D aquarium, dental care and flip-flops

The water reservoir will become a place of residence for more dangerous algae, for example, thread, which will cover not only plants and glass with fluff and fibers, but also stones and aquarium decorations. This will serve as a starting point for the spread of the fungus parasitizing on the bottom of stones, stems, moss.

Such organisms can already be considered dangerous as they will affect the quality of the water and the health of the fish or other inhabitants of the aquarium.

Why appear?

The appearance of green plaque is an issue that is still being studied today, so there are quite a few opinions here. We will highlight the most basic and most likely.

  • Problems with fast growing plants. There are several options here: there are too few such plants, they do not exist at all, or they have slowed down growth. Because of this, the nutrients with which the aquarium is saturated are the cause of the growth of algae.
  • A large amount of phosphorus combined with a small amount of nitrogen. This becomes the reason for the rapid reproduction of the protococcus, and the aquarium is literally overgrown with greenery.
  • Incorrect tank placement. Experienced aquarists know that no aquarium can withstand constant sunlight, but beginners, on the contrary, mistakenly believe that fish need a lot of natural light. Direct sunlight causes algae to appear in the aquarium.
  • Violation of the temperature balance. Depending on the type of fish contained in the tank, a certain temperature must be set in it. If fluctuations occur in one direction or another, this provokes the reproduction of algae, as well as diseases and poor health of the fish.
  • Poor care. This refers to a rare cleaning. Even with modern cleaning systems, you always have to control the cleanliness level yourself. The fish may not eat up the food, it will fall to the bottom and rot. In addition, fish waste also sinks down and creates an excellent habitat for algae.
  • Increased salt concentration. If you rarely change the water, do not defend it, or have recently treated your fish with salt treatment, this may very well be another reason why the aquarium is suddenly green.

It is very important to note that algae rarely begin to multiply due to any one factor. Basically, this process provokes a combination of reasons.

How to fight?

To get rid of the brilliant green, so spoiling the appearance of the aquarium, experts suggest using one of the following methods.

Green algae in an aquarium: causes of appearance, methods of control and prevention

A modern aquarium is not only a habitat for fish, but also a thing that decorates the interior of a room. For this reason, absolutely all owners are trying to maintain its impeccable appearance. Nevertheless, even with careful maintenance, the walls of an artificial reservoir can become covered with a strange green coating. You should know what kind of plaque it is, why it appears, and how to remove it.


This is the simplest and most natural method of dealing with an ailment at home, you only need to show a little patience.

It is reliably known that algae actively reproduce for only 21 days, after which new cells do not appear, and the old ones begin to die off. This means that the aquarium must be left alone for 3 weeks, after which the plaque will lighten and can be quickly cleaned.

This technique will be slightly different in low tech and high tech aquariums. If the aquarium is low-tech (without an additional carbon dioxide supply system), then you need:

  • clean the tank well;
  • make a water change (30%);
  • do not add fertilizer or change water 21 days.

If the aquarium is high-tech, the water is not changed, but fertilizers continue to be applied, as they are needed for the plants. However, their number should be reduced by 25%. After 3 weeks, the tank will need to be cleaned. They do it as follows:

  • all inhabitants are temporarily moved to another container;
  • they clean glass surfaces with a hard sponge, completely removing plaque;
  • pour out the water;
  • thoroughly clean the scenery, loosen the soil, then process it with a pump to remove all unnecessary particles;
  • wash the aquarium outside;
  • fill in new water, start up the aquarium and set up all systems;
  • when the parameters of the water and temperatures return to normal, start the fish.

Prevention measures

Green bloom is an unpleasant problem, but it is quite solvable and, most importantly, does not lead to the death of the inhabitants. If you properly take care of underwater pets, reacting in a timely manner to any changes in the aquarium, then such an attack does not threaten at all. After getting rid of algae, many aquarists try to make sure that this problem never occurs again. And this is quite real, if you take into account some of the rules of prevention.

  • Arrange the right lighting. Direct light provokes rapid cell division and algae begin to multiply. Get special phytolamps designed for aquariums. As for the length of daylight hours, the best solution would be 8 hours. You can adjust the light bulbs so that they work a few hours in the morning, and a few in the evening.
  • Monitor temperature readings. They should be adjusted depending on the type of fish, but generally the average temperature does not exceed 24 °. At higher rates, the multiplication of pathogenic microorganisms begins.
  • Control phosphate. If their number exceeds 0.8 mg / l, this is fraught with water bloom and the appearance of green plaque on the walls.
  • Take proper care. It includes cleaning and washing the soil, removing debris accumulated at the bottom and uneaten feed, caring for filters and other systems.
  • Calculate the amount of feed. This can also be done experimentally, since each type of fish eats differently. If you see that a lot of food has been served and it has not been completely eaten, next time feed smaller portions, so the aquarium will be much cleaner.
  • Don’t forget to change the water. Basically, the liquid is replaced by 25% every week. over, it must be defended in advance for several days so that the chlorine disappears. Boiled water cannot be poured into the aquarium.
  • Get a few “orderlies” in an artificial reservoir, who will eat algae and harmful microorganisms. You can advise the catfish of ancistrus, corridors, labeo. From snails, ampullia and neretina will help a lot. You can also populate the tank with shrimp: cherry or amano.
  • Plant some plants and take good care of them. The more plants you have in your aquarium, the less chance of algae.

Watch a video below for tips on how to deal with green algae in your aquarium.

How to get rid of flip flops in an aquarium. methods of struggle

Vietnamese algae in the aquarium is a perennial problem for aquarists, which appears unexpectedly and takes fish owners by surprise. The reasons for the formation of dark harmful algae can be different, therefore, when an enemy is found in an artificial reservoir, it is necessary to figure out what was the source of the appearance and reproduction of flip-flops in the tank. This algae can be difficult to deal with, so the aquarist will need the patience and knowledge of how to get rid of flip flops in an aquarium.

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How to deal with a Vietnamese

All aquarium owners should know how to deal with harmful dark algae, even if some of them have not yet been affected by this problem. Knowledge of how to deal with a Vietnamese in an aquarium will be especially useful for novice divers, since due to inexperience they may not notice the onset of the parasite.

Having discovered an invasion of algae, you should prepare for a long and hard struggle, because the Vietnamese will not retreat just like that. There are two ways to get rid of algae from the aquarium, which are recommended to be combined for best results.

  • Decorative items, driftwood and stones are removed from the container and thoroughly cleaned with a stiff brush to remove algal deposits. Then the cleaned elements are immersed in boiling water and boiled for 20 minutes. If for some reason it is impossible to boil the decoration, then you can soak the object in a solution of whiteness in a ratio of 1:20 for a couple of days, which kills the Vietnamese, and then rinse.
  • The vegetation is carefully removed from the soil, and washed under a running stream of water, trying to clean each leaf from plaque. Severely damaged parts of the flora must be removed.
  • The soil is cleaned of dirt and debris, and siphon. In order to prevent a re-invasion of algae, cleaning the soil from fish excrement should be done regularly.
  • The thermometers are wiped with a soft cloth dipped in alcohol.

Having finished removing the flip flop manually, you should proceed to the second part of getting rid of the reservoir from parasites. the biological method. The essence of this method is to restore the biobalance, which was disturbed due to the penetration of algae. For this, the following set of procedures is performed:

  • Systematic control of the reservoir population.
  • Multiplication of fast-growing flora that absorb nutrients, leaving the algae hungry.
  • Regular checking of the phosphate content in the aquatic environment. if the indicator has exceeded the norm, the level should be lowered by planting a cladophore in the tank. This healthy ball-shaped green plant absorbs phosphates and other substances that the Vietnamese feeds on.

In addition, you can fight harmful algae by changing the parameters of the aquatic environment:

  • Increase in hardness up to 8 dH.
  • Increase in acidity above 7.5 pH.
  • Weekly replacement of 30% of the water in the aquarium.

It should be noted that these methods can be used if the aquarist is confident that changing the parameters will not harm the fish and plants.

Description and reasons for the appearance

Vietnamese algae looks like small bundles consisting of fine hairs up to 2 cm in size. As a rule, the appearance of the parasite in the reservoir begins with the formation of leaves and stems of vegetation, decorations and other elements on the tips of the leaves and stems of vegetation. Vietnamese refers to red algae, however, the color of uninvited guests is rather dark brown, or even black.

The appearance of flip flops in an artificial reservoir frightens any aquarist, since, once in the reservoir, the algae begins to spread rapidly, filling the entire space. Algae feeds on organic matter, which is spread by the current, or carried by fish. If you do not start the fight against the parasite, then the plants will be doomed to certain and slow death, and the aquarium itself will take on an untidy and neglected look.

The reasons for the appearance of unwanted malicious guests can be the following factors:

  • Dirty, cloudy water in the reservoir, which creates a favorable environment for the life of the algae.
  • Oxygen deficiency in the aquatic environment. because of this, the plants become weakened, and the higher flora is no longer able to resist the reproduction of Vietnamese.
  • Powerful flow of liquid. strong jets of water lift silt and mud from the bottom, which are food for the parasite.
  • Overpopulation of the reservoir. if the aquarium contains an abundant number of plants or a lot of fish, this provokes a violation of the biobalance of the reservoir.
  • High content of nitrates and phosphates. they are food for the Vietnamese.
  • Placing untreated stones, decorations and soil in a reservoir. together with the contaminated elements, the algae penetrates inside, and begins to develop.

An interesting fact: in the course of numerous observations, it was found that the first thing the algae affects plants with wide foliage, for example, anubias or echinodorus.


Having got rid of harmful algae in the pond, you should not relax ahead of time. a Vietnamese woman can return at any time. To prevent the reappearance of the parasite, the following preventive measures must be taken:

  • Before immersing new decorations and soil in the aquarium, the elements are carefully processed by rinsing in water and using certain cleaning methods: boiling, calcining, soaking.
  • If there are yellow bulbs in the tank, you need to replace these lighting fixtures with fluorescent ones. It is recommended to renew the lamps every six months.
  • Refresh the aquarium water weekly, making a partial change, and monitor the parameters of the aquatic environment.
  • If there are a lot of plants in the aquarium, it is recommended to use phosphate-free fertilizers.
  • If a strong flow is installed in the tank, the flow rate should be reduced.

A flip-flop in an aquarium is an unpleasant phenomenon, but not fatal, therefore, upon discovering an invasion of algae, you should not panic. You can cope with parasites using the advice of experienced aquarists, but it is best to prevent the formation of plaque by regularly taking preventive measures and caring for the pond.

How to get rid of a black beard in an aquarium

One of the most unpleasant experiences for the aquarist is the appearance and rapid growth of algae in the aquarium. Everyone who maintains an aquarium, sooner or later, is faced with their appearance.

Do not hope that the algae will sit on a tiny speck of some kind of aquarium plant that grows imperceptibly in the corner of the aquarium. If you do not pay enough attention to the moment the algae appear, then soon enough the aquarium will be completely captured by them.

The Blackbeard algae, also known as Compsopogon coeruleus, Black Brush Algae or BBA, are the most dangerous because of their spreading speed and intractability. By the way, they are confused with the “Vietnamese” (Audocinella). You need to understand that these are different algae, despite all the external similarities.

A black beard appears as a small black brush-like speck on the leaf of an aquarium plant or decoration, and then quickly spreads around the aquarium, covering everything with a solid black carpet. Slow growing plants such as anubias and ferns are the first to suffer.

This is how a plant affected by a black beard looks like:

There are many reasons why a black beard appears. I would not want to go into a description of the causes of the occurrence, since the article is about getting rid of a black beard. I will mention that the reasons for the appearance of a black beard are considered to be excessive lighting in the aquarium and an abundance of nutrients that are not consumed by aquarium plants.

Black beard is always present in the aquarium, and it is more appropriate to talk about controlling its spread than preventing it from entering the aquarium.

How to deal with a black beard

Excess light and nutrients are thought to be the main cause of black beard flare-ups. Most novice aquarists find it difficult to calculate the required amount of food for aquarium plants, which leads to an excess of them.

For beginners, it is difficult to calculate the level of lighting in an aquarium. It doesn’t matter if we’re talking about the power of lighting lamps or the length of daylight hours. Excessive lighting always leads to the appearance of a variety of algae, not just black beards. Therefore, it is better to use weaker lighting. If a new aquarium is launched, then you can safely set low lighting and a minimum daylight hours.

Low light conditions will make it difficult for aquarium plants to grow. But, you must admit, it is better to have an aquarium with slowly growing plants and without a black beard than to have a fast growth of aquarium plants with an equally rapid growth of a black beard.

It is difficult to calculate the level of light in the aquarium and the amount of nutrients at which the black beard will disappear. But rest assured, reducing the amount of aquarium feed and light levels helps control the spread of black beard. In addition, there are several additional methods that help to overcome the black beard in the aquarium.

Hydrogen peroxide

Hydrogen peroxide (H2O2) is used to clean aquarium plants that cannot be removed from the aquarium. The treatment process is reduced to the following sequence of actions:

  • Draw 5 ml of peroxide into a syringe
  • Turn off the aeration system and the compressor in the aquarium
  • Spray hydrogen peroxide on the affected area of ​​the plant

The method helps to cope with a black beard at the stage of its appearance. Remember, high concentrations of hydrogen peroxide are dangerous for aquarium fish and thin-leaved aquarium plants like Riccia.

What fish eat a black beard

Some aquarists manage to curb the growth of the black beard with the help of fish that like to eat algae. These include such common fish as:

  • Black mollies
  • Siamese algae
  • Swordsmen

The Siamese algae eater is most popular and effective in eating algae. Be aware that the Siamese algae eater can eat delicate aquarium plants and mosses. By the way, some aquarists never noticed that mollies or Siamese algae eaters ate a black beard. The trick of using algae eaters is that the fish should be hungry and there should be no other food other than algae in the aquarium. Of course, in the presence of hearty and tasty food, algae eaters will refuse to eat a black beard.

How to remove a black beard from an aquarium

Another way to get rid of a black beard is to immerse aquarium plants and decorations in a solution of Whiteness bleach (1:20). The method is effective and cost-effective, but with one indispensable condition: Before processing, the aquarium plants and decorations are removed from the aquarium. The method is applicable to aquarium plants affected by black beards, such as anubias and ferns, but is not applicable to plants that are deeply rooted in the soil and have a branched root system. Removing a black beard with Whiteness is done as follows:

  • Dip affected plants and decorations in 1:20 bleach solution for 10-15 minutes.
  • Rinse plants and decor thoroughly in running water.

Remember, getting bleach into your aquarium is dangerous for your aquarium fish. The time for which the plant must be immersed is determined by the degree of damage and the strength of the leaves:

  • Sturdy plants with strong leaves such as anubias and ferns are submerged for up to 15 minutes
  • Soft deciduous plants such as Cryptocorynes or Bacopa are immersed for 3-5 minutes

A solution of potassium permanganate (potassium permanganate KMnO4) is used in a similar way.

Black beard remedy

Each manufacturer of aquarium chemicals has a line of products designed to combat black beard and other algae. There are also household chemicals whose use is permissible in the fight against algae. For example, Cidex, manufactured by Johnson and Johnson.

It is enough to choose a suitable aquarium chemistry and apply it, having previously read the instructions for the preparation. Remember, drugs eliminate the effects, but not the cause of the black beard. Rarely, when it is possible to get by with one method of removal, and you should not expect to get rid of a black beard quickly. It will take systematic and careful work to eliminate the causes and consequences of the occurrence.

Methods of dealing with the “beard

Blackbeard algae are removed by chemical preparations. boric and brown acid, antibiotics. The first two are very effective but will harm fish and other broadleaf plants.
2. The biological method is to launch fish into the tank that eat black algae: labeo, Siamese algae eater, ancistrus catfish, fish of the Karpozubye family. They cleanse the diseased plant from the parasite, but do not completely destroy it.

Changing the parameters and conditions of the water in the aquarium. after this process, harmful algae will not be able to live. The water hardness must be adjusted to 8 dGh. In order for the new water that you add during the replacement to be exactly the same, you should add 2 ml of calcium chloride solution to 1 liter of water. The pH level can be brought to alkaline: 1 gram of baking soda for 5 liters of water will help. Water conditions should be changed gradually so that living things are not affected, or temporarily transplant them into another aquarium.
4. Get rid of excess organic matter. food debris gives rise to the development of a harmful environment. Keep the bottom clean, do not overfeed fish, remove excess feed with a net or siphon.
5. Replace water in time. 20-30% of old water should be replaced with fresh and clean water once a week. These methods will not immediately give a result, but you will notice that after 2-3 months the amount of black beard has decreased.
6. Coal dust will help destroy Vietnamese algae in a matter of days. Add this powder to the water, stirring until the dust settles. In a few tricks, the beard will completely disappear. From an aquarium with coal dust, fish must be planted.
7. If these methods do not work, do 10-25% water changes daily. New water should be free of chlorine, ammonia, phosphates and nitrates. Determine its parameters using instruments with indicators. Nitrates and phosphates. a breeding ground for all types of algae.

Effective methods of dealing with a black beard and how to get rid of it

Good day, dear visitors!
On this page I have collected some ways and methods of dealing with a black beard. All aquarists have likely gone through this. There are many ways to deal with a black beard. But how effective are they?

I faced this problem too. So far I settled on a long method. I will wait for the black beard to disappear by itself. And at this time I will change the water, monitor its composition, and so on and so forth. In general, read here at your leisure. Collected information from the global network. I will describe my experience on a separate page and a little later. I think not before the black beard disappears.

Photo of a black beard in my anubias aquarium. The photo is not for the faint of heart, but it can be many times worse.!

A black beard covered the leaves of Anubias. Only new leaves are still clean.

Useful links on my blog Aquarien:

So, various effective ways to deal with a black beard according to the authors. And even without approval

Most of all, the aquarist is saddened by the appearance of algae in the aquarium. crimson, or kompsopogon, which is popularly called “black beard”. The fight against these algae is many times more difficult than with all the others. It is useless to peel off black beard brushes, poison with chemistry. They stubbornly appear here and there. The most reliable, but not very fast, way to get rid of purple flakes is a painstaking and constant water change and soil cleaning. Every other day, 10-15% of water is changed in the aquarium with surface cleaning of the soil. This must be done constantly, avoiding interruptions, then in 1.5-2 months the “beard” will practically crumble. Its small islands, occasionally found on stones, old leaves of plants, do not spoil the overall picture. Previously proposed control recipes based on shifting the pH value require careful monitoring of the state of the environment. Otherwise, the damage done to fish and plants may be irreparable. It is also recommended to dip the plant in a dilute solution of acetic acid for a few seconds and then rinse thoroughly. Such a short stay in an aggressive environment for plants will not hurt much, and the crimson will fade and crumble in a few days.

READ  How to change the water in a large aquarium

Another photo of a black beard from my collection.

It can be seen that the parasitic beard is at the top of the bark. Just under the lamp. The most interesting. that there is no beard at all in the tree below.

The main method of dealing with the “black beard” is the mechanical cleaning of the affected areas with a stiff brush, however, if even a small point remains, then another bundle of algae will grow from it.
It is better not to create conditions for the reproduction of this algae (if it does get into the aquarium) by regularly cleaning the aquarium, replacing the old water with fresh water. You can only avoid flip flops getting into the aquarium by buying known clean aquarium plants at the pet market. If at least one leaf of the plant you notice a hair of dark color, then refuse to purchase.

A black beard in an aquarium is a lot of trouble and it is very difficult to fight it. If there is current in the aqua, minimize, reduce daylight hours and increase the frequency of changes and add fast-growing plants such as hornwort. Shl-there is a drug for algae. To be honest, I haven’t tried Sydex, but people seem to be praising it.)) Try to get a SAE, they eat a good beard.

So gradually, over the course of three months, my filter was overgrown with a black beard or Vietnamese. over, it grows where there is more light from the lamp. Many people write. that light does not affect the Vietnamese, but my observations show that this is not the case.

Photo of flip flops on my aquarium filter.

Tetra aquarium filter is overgrown with a beard in the sky!

… The most important thing is that you don’t have to buy anything. you will find everything you need in your own kitchen. This method is as follows. Remove the affected plants from the aquarium and submerge them in 3-7% vinegar and dilute about half with the aquarium water. Great accuracy of manipulations does not require a percentage solution of ordinary table vinegar (you can also use apple cider vinegar) for 5-6 minutes. Acetic acid is of little toxicity to other inhabitants of the aquarium and therefore there is no need to be afraid of poisoning. After treatment, the plant should be rinsed in aquarium water and put back. You should not dip the root system in vinegar, since then it is difficult to remove it from there. This procedure is perfectly tolerated by the above-mentioned Anubias, Echinodorus, Cryptocarines, etc. The same can be done with stones and snags. you can soak in hydrogen peroxide for 1 hour and soak in water for 30 minutes, then that’s all.

Black beard appears in old aquariums, with an overabundance of organic matter. Actually, recently in one of my aquariums, it manifested itself in full glory. It is difficult to deal with it, but it is still possible.
1.Increase the frequency and amount of fresh water changes. It is advisable to start changing the water every 3 days at 20%.
2.Reduce the number of feedings by 2 times, feed. only frozen and in very small portions
3.As Denis correctly wrote, reduce the circulation of water in the aquarium
4. Plant Siamese Algae Eaters (SAE), only they are able to eat black beard. Other fish can be planted, leaving only SAE, the latter should not be fed with anything!
5. Take out all the plants, stones and decorations and treat them in a separate bowl with a solution of whiteness diluted 1 to 20. After this treatment, the black beard dies in 5-7 minutes. CHECKED, works!! !
6.Clean the soil very thoroughly with a siphon, remove as much silt from it as possible
7. Plant a long-stemmed aquarium. excellent plants in the fight against algae will be valisneria, nayas, rotala indian, but especially hornwort! The latter is not very decorative, but extremely useful plant. I keep him as an orderly
8. Reduce the stocking density of fish, as they are sources of nitrates and phosphates, which stimulate the development of the “black beard”
9. Apply fertilizers containing iron and manganese, such as Tetra Plantamin. Iron and manganese are essential for higher aquatic plants and are harmful to algae

This type of algae (although several species are understood by this name) is one of the most disliked by aquarists, since it is very difficult to control it. First, these algae cover the edges of slow-growing plants like Anubias, or grow in small bunches. Then they cover all the plants in the aquarium, making it look ugly. They are not dangerous for fish. It is almost impossible to remove these algae mechanically. By darkening or chemistry, in principle, you can fight them, but then they will grow again. Some fish (siamese algae eater, for example) supposedly eat it, but on the condition that they are not fed anything else.

To remove a black beard, it must be stripped of all nutrients. But she needs everything the same as the higher plants, so it is necessary to ensure that all the nutrients are consumed by the plants, and nothing goes to the beard. To do this, you need to increase biomass and reduce the amount of organic matter, nitrates and phosphates.

Plant your aquarium with fast-growing plants: any hygrophila, hornwort, nayas, ludwigia, riccia, etc. But after getting rid of the black beard, they can be removed, but perhaps you will like your new garden

In the aquarium, stop aeration and reduce filtration. Since the flow of water to the black beard will bring nutrients. With the right lighting, the plants themselves will release the right amount of oxygen into the aquarium. But if you see that the fish do not have enough of it, then simply reduce the aeration without turning off completely.

Increase the frequency of water changes up to 2 times a week for 15-20% of the volume. When changing the water, in no case raise the dregs, as this will provoke an outbreak of algae.

If possible, remove all fish from the aquarium. Otherwise, reduce their feeding to 1 time in 2 days and give less feed than usual so that it does not accumulate in the ground.

Remove algae mechanically from plants, rocks and driftwood. To do this, you can.

It is better, of course, to plant the fish from the aquarium for the period of struggle with the black beard, due to the fact that they simply will not like the conditions created in the aquarium.
you can mechanically, with a cotton swab, remove the beard from the plants. Anubias plant can be placed in a cake box or plastic container for 5-7 days, in general for a week in a humid place so that the plant does not die. do not freak out, nothing will happen to him. Avoid changing the water in the aquarium for at least 2. 3 weeks. (if, nevertheless, there are fish and the method of control is made with their presence in the aquarium, carefully monitor their behavior). Reduce aeration or not at all (monitor the behavior of the fish, especially if, as is often the case, the aquarium is overcrowded). Reduce or completely stop the flow of water in the aquarium (you can turn off the filter, again, monitor the behavior of the fish). Feeding fish is carried out 1 time in 4. 5 days. not abundant (it is possible and 1 time a week, unless of course there are no juveniles in the aquarium, it is better to plant the fry right away). Leftover food, if any, should be removed with a siphon (do not add fresh water after cleaning, it will not be a big deal if the water level in the aquarium decreases). It remains only to observe how in a week and a half a black beard, that is, its hairs become whitish in color, flabby in appearance. After another 3. 5 days, these hairs will begin to fall off, and then all this muck will be removed from plants, stones, etc.
That is, we can draw a certain conclusion. a black beard does not like extreme living conditions, it is not able to resist the inconveniences of life. Therefore, do not break the cycle of struggle and bring this matter to the end.

I agree with everyone! But I also had such a problem 30 years ago and got rid of it quickly. I connected 2 copper wires 1mm to the Krona battery. dia. I put it in the water at different ends of the aqu. I did not remove the plants or fish. After 10 days, the beard was gone. In general, hygiene aqu. and quarantine of new fish and plants, and everything will be fine!

My husband got rid of it like that. OH added a sodium hydroxide solution to the aquarium, shifting the pH to 9.0, but two days later the control showed that the initial data was restored. 6.0-6.2. Re-adding caustic soda again shifted the pH value, but for a very short time. Soft water stubbornly did not “want” to keep the alkaline reaction. I had to increase the hardness of the water. Within a week, the hardness was brought to 8 °. At the same time, baking soda was added to alkalize the water and create a bicarbonate buffer, the concentration of which was brought to 0.05% (0.5 g per liter of water). The pH rose to 8.2-8.4.

In the aquarium, where there was no purge (an external filter worked) and there were no fish digging the ground, the “beard” quickly subsided and disappeared after about a month and a half. At the same time, the state of the fish did not change. The appearance of the plants has even improved, many have accelerated their growth, the greenery has become brighter. In a ventilated aquarium, the situation was worse: the black cover thinned, but did not disappear. I had to reduce the number of fish, turn off the blowing. On this, the fight against the “Vietnamese” was successfully completed.

Now that in my aquariums occasionally appear “black beard” bushes (mainly after acquiring new plants). it doesn’t bother me anymore. I know conditions that are disastrous for harmful algae. First. Water hardness must be at least 8 °. You can increase the hardness by 8 ° as follows: for 1 liter of water prepared for replacement, you need to add 2 ml of a 10% solution of calcium chloride and 2 ml of a 6.7% solution of magnesium sulfate (to prepare 750 ml of a solution, you need 50 g of bitter MgSO4 salt).

Second. The water must have a stable alkaline reaction. This is achieved by creating a bicarbonate buffer. Add 0.2 g of baking soda to 1 liter of water (about 0.5 teaspoon per bucket). An increase in the amount of soda twice does not significantly change the alkalinity of the water, but leads to an excess of sodium, which has a bad effect on many higher plants.

Third. It is necessary to constantly remove excess organic matter from the aquarium, replacing at least a quarter of the volume of water weekly and cleaning the soil once a month.

Fourth. There should be no fish digging in the aquarium; strong blowing must not be allowed to stir up water.

Fifth. The number of fish should be limited. The best thing is to follow the recommendation given by N.F. Zolotnitsky: for 10 liters of water in the aquarium (species) there should be one fish 5-7 cm long. In an overcrowded aquarium, organic matter quickly accumulates, pH fluctuations are significant, and it is much more difficult to fight the “black beard”

Video of my 25 liter nano aquarium. gradually overgrown with a black beard.

And the last final scan from the site page: akvariumnyerybki.ru/akvarium/kak/kak-izbavitsya-chernaya-boroda-v-akvariumе

A black beard aquarium is a big problem, which is not easy to get rid of. The second name of the parasite is “Vietnamese”, the scientific name is Compsopogon coeruleus, sub-kingdom of Bagryanka. In an aquarium, a black beard can be seen when 20 mm long black filamentous outgrowths appear that will grow to resemble moss. The parasite lives on slow-growing plants, therefore, when destroying it, the water parameters and characteristics of the host plant should be taken into account.
Vietnamese algae got this name due to the fact that they were brought from Southeast Asia along with thermophilic tropical plants. This means that they love warm water, in which they actively develop. It is known that Compsopogon coeruleus is a very tenacious alga that penetrates plant tissues, firmly attaches to the soil substrate, to the walls and equipment of the tank. From a biological point of view, this is not a parasitic species, however, it causes significant damage to the plant, destroying its tissues, shading the leaves, preventing the absorption of nutrients. Literally, the diseased plant “suffocates”.

How to prevent flip flops

Fast growing plants will stop the growth of black beards in the aquarium. For their normal development, fertilizing with phosphate-free fertilizers, potash fertilizers is necessary. The fertilizer concentration should be high, this will stop the growth of algae. Using instruments, measure the amount of nitrates, nitrites in the water. there should be no more than 5 mg per liter of water. If there is no nitrate in the water, the plants do not absorb phosphate, which leads to the formation of unwanted algae in the aquarium, which is difficult to get rid of later.

A black beard also appears in the aquarium when you plant new, untreated plants in it. Not only can there be parasites on them, but also “flip flops” cells. Before placing a new plant in water, you need to disinfect it with the drug Bicillin-5 or penicillin. Some breeders are used to using ordinary bleach, but this substance is not sparing, and it is not easily washed off. Quarantine new plants, disinfect them with bicillin-5 (dose 150 thousand units per 10 liters of water), or penicillin (dose 50 mg per 10 liters of water). Disinfection should be carried out at a temperature of 25-26 ° C, depending on the type of plant. The solution for disinfection is injected into the water every 24 hours, before that, replacing the water. For the first 2 hours, the vessel with water must be placed in the shade, and then rearranged to a lighted place.
Plants such as elodea, anubias, kabomba do not tolerate bleach well, so this remedy is not applied to them, although the bleach solution effectively fights black beard. Bleach can be replaced with hydrogen peroxide (dose 20 ml per 100 liters of water once a day).

What else needs to be done to destroy the parasite
If you are unable to find out the concentration of phosphates and nitrates in the aquarium, contact the Sanitary-Epidemiological Service for measurements and analyzes. As a last resort, take distilled water and add calcium salts to it. What else is recommended to do to destroy algae?
Carbon dioxide will help to get rid of the “beard” in the aquarium. buy a CO2 installation.
Take a solution of whiteness and water in a ratio of 1 to 20, pour it into the water where you place the diseased plant. The treatment will take place quickly. white will appear from black, then green, after 5-7 minutes the beard will be completely destroyed. After treatment, the plant must be washed for 20 minutes under running water. After that, do not flood it in the aquarium, but put it in temporary quarantine.

So we read, learn, try. Write if you know how to get rid of a black beard. If you like it, we like it! Something seems very useful to me.