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The water in the aquarium becomes cloudy.

maintenance, care, compatibility

Muddy aquarium: from what and why the water becomes cloudy, what to do

Preparations eliminating mechanical turbidity in an aquarium

Water in an aquarium quickly becomes turbid: what reasons can?

Turbid water in an aquarium is not uncommon when starting a home pond. This is due to the fact that a bacterial outbreak occurs, which is caused by the active reproduction of single-celled organisms in water. That is why the settlement of fish is better to postpone for a while.

You need to wait some time to establish a balance in the water, and it will become transparent. If you change the water, then again there will be a blurred water in the aquarium.

If the water in the new aquarium dims, it should take at least 5-7 days. Only after that you can safely run the fish. During this time, biological balance will be restored.

To speed up this process, you can add some water from the old aquarium.

Often, the aquarium becomes turbid due to overfeeding the fish. Water spoils quite quickly if food is not completely eaten by the inhabitants of the mini-reservoir. It settles at the bottom of the tank and can spoil the life-giving moisture.

This is another common cause of this problem.

If this trouble still happened, you need to determine why the water in the aquarium dimmed. Only the exact answer to this question will set the course for further action. If the root of the problem is hidden in the overpopulation of the aquarium, you need to reduce the number of its inhabitants or to increase filtration.

If at the bottom the remnants of the uneaten food are deposited, the number of servings needs to be reduced or satted down with the bottom fish, which will eat up the remains.

If you can figure out why the water in the aquarium becomes cloudy, and the reason was an excess of light, you need to darken the aquarium. If the lighting is not enough, you need to add it. It is possible to halt the excessive growth of algae.

To do this, snails or fish that feed on algae and excess vegetation will settle in the pond.

What else makes the water in the aquarium muddy? Due to low-power filtering system. A prerequisite for the preservation of biological balance and decent maintenance of the aquarium is the presence and normal operation of high-quality filters.

If the aquarium is dimmed after all, you can add a special additive, which is sold in specialized stores. However, in most cases it is not possible to restore the balance in water.

To understand why the water in the aquariums becomes cloudy, you need to understand the reason for this process. However, it should be remembered that the water in the “pond” is always alive.

Her condition is a consequence and the result of the interaction of a whole series of tiny creatures, therefore, certain conditions and time are needed for restoration. But hasty and incorrect decisions can lead to even greater destruction, so you need to act carefully.

Muddy water in the aquarium: what to do -description of problems photo video.

For 4-7 days the aquatic environment is fully restored, you can run plants and fish into it. To speed up the process, you can add water after the old aquarium with “residential” water.

Another common problem with the rapid turbidity of water in an aquarium is poor filtration of the reservoir. It should be well thought out system of purification, and this should be done quickly, until the young fish and did not have time to get used to a new house.

A bad filter does not allow bits of dirt, feces, food debris, provoking the formation of decomposition products. Such rotten water constantly stinks and can cause diseases.

Watch a video about filtering water in an aquarium.

Why still water quickly becomes cloudy? If it has become an unpleasant green color, dimmed in a short time – it means that microscopic blue-green algae develop in it, which lead to the flowering of the reservoir. With good development of organic and strong light, they make themselves felt on the fifth day.

When the light is not enough, cyanobacteria will acquire a brown color and begin to rot. Green color of the liquid with muddy, unpleasant smell – signs of growth of blue-green algae.


If frequent water changes, the growth of bacteria and algae provoked the appearance of muddy water in the aquarium, some steps should be taken to eliminate the problem.

  1. If your aquarium is overpopulated, place the fish in different tanks, where they would be comfortable and spacious.
  2. If there is an excess of light, shade the aquarium by setting it in a secluded corner where strong lighting does not go.
  3. If the water becomes cloudy the next day after the first feeding, make a bottom siphon and feed the fish in small portions.
  4. Settle snails and fish in an aquarium that eat leftover food, clean glass and water in a tank. After a few days, the water will become free of dirt, and will not require additional replacement.


Wrong settlement of fish as a reason for the rapid turbidity of water

Why 2-3 days after the settlement of fish water became muddy? The fact is that for every one liter of water in the tank it is required to settle only one medium fish.

If you run more pets, there will be problems with the pollution of the “house”. Some fish plow the ground, and if there are many such individuals, it will turn into an underwater hurricane. Immediately move the fish in different aquariums, provide enough space for them.

It is also important that they have enough oxygen, shelters and plants. In poor water oxygen to the fish can get sick.

In the aquarium with proper care and the right equipment, the water on the second day will not deteriorate. After running the fish, make sure that it adapts to the new environment.

For 3 liters of water it is necessary to settle the fish size of 3-5 cm.

If the water is cloudy, you can use drugs that purify water from turbidity and dirt. After using them, water changes in the aquarium are not required for a few more days. They connect all the small particles that spoil the water until they fall into the filter.

The next day, the entire bacterial cloud, small algae settle on the filter sponge, after which they can be removed.

These are the drugs: JBL Clearol, JBL Clynol, Seachem Clarity, Sera Aquaria Clear.

Watch a video about water changes.

Full replacement of water is required only in the rarest cases, for example, with general quarantine or water poisoning. Why not do this procedure often?

Because the day after the complete substitution, you will notice how the water turned cloudy again. A significant loss of its volume is stress for all inhabitants of the reservoir.

Even during the death of some fish do not replace the water. But there are a number of recommendations, after studying which it is possible to understand why substitutions are necessary.

  • Substitutions are necessary after the introduction of pathogenic microorganisms;
  • Replacements are required after visible flowering of the reservoir;
  • Urgent water changes are necessary when a fungal mucus is detected;
  • Refresh water is required due to severe soil contamination.

You can add water to the tank as it evaporates, but not more than 20-30% of the total volume. It is best to update 1/5 of the aquarium once a week. After the procedure, the biocenosis will recover in 2 days.

With the replacement of water cleaned the glass from plaque, remove debris from the bottom, clean snags and decorations.

It is better to plan a water change for both small and large reservoirs in advance. Type in a glass tank water from the tap, and leave it for a few days, covered with gauze. Chlorine and gas will evaporate, the liquid will be safe for fish.

And it should be remembered that in the first week of operation of the aquarium the water is not changed until an ecosystem is formed in it.

Why does the water in the aquarium with fish quickly become turbid :: should the auto-oil in the frost grow turbid :: Aquarium fish

The aquarium is not only an interior decoration, but first and foremost an ecosystem that lives according to the laws common to all ecosystems. It is stable when there is a biological and chemical equilibrium in it.

An imbalance immediately affects the appearance of the aquarium, and primarily the quality of the water.

The question “opened a pet store. Business is not going. What to do? “- 2 answers


Turbidity in the aquarium is usually caused by the massive development of various bacteria. Where do bacteria come from? They, like other microbes, enter the aquarium with fish and plants.

Their source can also be soil, fish food and even air with which water is in contact. A certain number of bacteria is always present in each of the elements of the ecosystem. In a certain amount, they are harmless to other inhabitants of the aquarium.

At the same time the water remains clean and clear. With the mass reproduction of bacteria, you will definitely encounter two or three days after filling the aquarium with fresh water. This is due to the fact that in the absence of a sufficient number of other organisms, bacteria begin to multiply rapidly.

Outwardly, it looks like a light whitish or nacreous homogeneous dregs. The process of reproduction of bacteria goes faster if there are plants and soil in the aquarium.


After another 3-5 days, the clouding disappears. This is due to the appearance of ciliates in the aquarium water, which are intensively eaten by bacteria. There comes a moment of equilibrium of the ecosystem.

From this point on, fish can be settled in the aquarium. Plants need to be taken from an aquarium with healthy inhabitants.


The clouding of the water in an aquarium where there are already fish can be caused by an organic slurry. The suspension is formed from the waste products of fish and plants, as well as improper feeding and an excess of dry food.

To control the suspension, aquarium filters are used, including biological ones, in which organics are actively absorbed by bacteria living on the filter material. Mandatory measures are also cleaning the bottom, removal of dead parts of plants, dead organisms, excreta.

The rapid turbidity of the water in an aquarium with living fish can be a manifestation of an imbalance and may be the first symptom of the disease of the entire ecosystem. For example, precede the blooming of water. In this case, the aquarium has a large volume, frequent full change of water in it is impractical.

It is easier to restore biological balance by adjusting the light mode and replacing only part of the water. In large aquariums, biological balance is easier to maintain than in small ones, but it lasts longer. Branching crustaceans (daphnias, moinas, basmins, etc.), which feed on bacteria, are good feeds for fish are good sinkers of dregs.

A mandatory equilibrium factor should be considered aeration and filtration of water. Filters should be cleaned regularly.

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