Science Question: Why does the water in the fish tank turn green? Microorganisms

Water turning green is the reason for the proliferation of green algae, ozone has strong oxidation, can kill green algae, but if ozone is directly passed into the aquarium, it will also kill fish and aquatic plants, so it is usually used ozone to access the protein skimmer, after the water flow through ozone action and volatilization, clean water flows into the tank, so ozone will only kill the planktonic green algae, but there is no way to attach the green algae, and this method is very costly, only aquarium enthusiasts will use it, And they don't use ozone primarily to get rid of green algae, so it's not very practical.

First of all, you don't have to be alarmed by these green algae, the traditional Chinese goldfish farming method strongly advocates the use of green water to raise fish, because green algae can absorb harmful substances in the decomposition water through photosynthesis and release oxygen, and it is also a good auxiliary food for goldfish.

The discoloration of water bodies is generally caused by algae blooms in water bodies, such as the recent famous red tide phenomenon, which turns the entire area red. As for the microorganisms you are talking about, in fact, microorganisms are a very broad concept.

As long as it is invisible to the naked eye, it can be called a microorganism. Various algae are actually a type of microorganism, and the reason why you see color is due to a large number of aggregations. There are a wide variety of microorganisms in water bodies, including:

Algae, bacteria, fungi (algae are fungi). So, you asked, "Are algae produced by microorganisms?" "Actually, it's a very wrong question.

In fact, there are more or less various microbial individuals in our air, and various algae are no exception. Since most of the tap water we currently use comes from rivers, it has been disinfected, but there are also various microorganisms in it. Moreover, when we buy a variety of ornamental fish, the fish itself will carry various microorganisms on its own body (and excrement).

As a result, algae are produced either due to airborne transmission, or from water bodies, or by fish.

1. The water in the tank has turned green, indicating that a large number of algae (green moss) have grown in the water, which should be removed in time. Algae absorb oxygen at night and release CO2, which reduces oxygen and increases carbon dioxide in the tank, which poses a great threat to the survival of fish. If the fish tank is large, there are few fish, or the outdoor fish pond is not a big problem, if the fish tank is small, you can't let it flood, otherwise there will be a danger of dead fish.

2. There are three types of algae that appear most often in aquariums: cyanobacteria, green algae and yellow-green algae, which are tiny algae plants that grow in the water. Algae plants can be food for small fish and can also increase the oxygen content in the water, which is good for fish.

But at night, algae plants compete with small fish for oxygen.

The green film growing on the inner wall of the fish tank is caused by algae plants, because the water is rich in nutrients because the water has not been changed for a long time.

Most algae plants live in water, have a simple structure, no differentiation of roots, stems and leaves, and their cells contain a large number of chloroplasts and can carry out photosynthesis. If the water in the fish tank is not changed for a long time, the feces of the fish will lead to excessive accumulation of organic matter in the water, eutrophication of the water body, and a large amount of carbon dioxide will be produced by fish respiration.

For algae plants to photosynthesize, causing algae plants to bloom, thus turning the water green. Both bryophytes and ferns live in the shade of the land, and seed plants live on the land. Spore plants generally prefer to grow in shady, damp places.

Reason 1: Caused by the overgrowth of green algae in direct sunlight water, green water often occurs in the early stage of tank construction, because the nitrification system has not yet been established, under the joint action of light, temperature, organic matter and inorganic matter, green algae in the water multiply, causing green water.

Reason 2: When cleaning the filter material, all the filter materials are cleaned, so that nitrifying bacteria cannot exist, causing the collapse of the nitrification system. At the beginning of green water, the water is light green, and after a period of time, it will be dark green, and if it is not treated, it will develop into a dark green, and the fish will be at risk.

The reason is that at this time, a large amount of green algae and the fish jointly deoxygen, which makes the fish lack oxygen.

Algae removal is required when the water in the fish tank turns green. The green color of the fish tank water indicates that there is a large amount of chlorella. Although the green water is harmless to the fish, it is very difficult to watch and does not look very beautiful.

To remove it, it needs to be eliminated with an algaecide or germicidal lamp. If you want to prevent green water, you should pay attention to avoiding light, which is the main cause of algae blooms. Filtration, especially biofiltration, should also be strengthened.

In addition, the number of fish and shrimp can be appropriately reduced to ensure that the feeding density is appropriate.

The water in the fish tank turns green, mainly due to the bloom of chlorella, although it looks very unsightly, but the green water is not harmful to the fish, and even has benefits, it can stabilize and purify the water quality, and at the same time it can also absorb and transform toxic substances, so it can not be treated. If you want to make the water clear, you can use algaecide or irradiate it with a germicidal lamp, and it can be eliminated quickly.

The reason why the water in the fish tank turns green is mainly due to the environment. Small green algae is a plant that can be self-reproducing through photosynthesis, and if the fish tank is placed in a sunny place, it is easy for it to explode in large quantities due to sufficient light. Therefore, with proper shading, the rate of its reproduction can be slowed down.

Another reason for chlorella outbreaks is the high levels of ammonia and nitrate in the water, which is due to the lack of biofiltration and the absence of nitrifying bacteria to treat them. Therefore, as long as a good nitrification system is established, ammonia and nitrate in the water can be eliminated.

If there are too many farmed fish and shrimp, the usual feeding amount is relatively large, and their excretion is also very large, which will let a lot of organic matter enter the water, and the nutrients rich in these organic matter can also promote the growth of algae, which in turn causes the water body to turn green. Therefore, by appropriately reducing the number of fish and shrimp, or controlling the amount of food, the water quality can be improved.

The reason why the water in the fish tank turns green is because the water is overnutrient and there is plenty of light, which leads to algae blooms, which makes the water green. It is worth mentioning that the green water itself is harmless to the fish and even helps to a certain extent. It can be used as feed for some fish, and at the same time, it can also release oxygen through photosynthesis and absorb ammonia nitrogen from the water, which is beneficial to the health of the fish.

The reason why the water in the fish tank turns green is because the water is overnutrient and there is plenty of light, which leads to algae blooms, which makes the water green. It is worth mentioning that the green water itself is harmless to the fish and even helps to a certain extent. It can be used as feed for some fish, and at the same time, it can also release oxygen through photosynthesis and absorb ammonia nitrogen from the water, which is beneficial to the health of the fish.

1. Absorb ammonia nitrogen: the green of green water is the color of chlorella, and algae can absorb ammonia nitrogen in water, ammonia nitrogen is mainly produced by the decomposition of organic matter, and when the nitrification system is not established, algae can absorb it, so as to avoid poisoning to fish, which is equivalent to improving water quality.

2. Release oxygen: Algae are also a plant that can photosynthesize, so when there is enough light, they can release oxygen. It is important to note that you should not receive light for a long time in order to increase the dissolved oxygen in the water body, as this will cause algae to burst and occupy a lot of space and affect the survival of fish.

3. As food: some fish have more miscellaneous food, they can eat algae, so green water can also be used as food, but the nutrition of algae is relatively simple, so for its health, it is necessary to feed other feeds, otherwise the growth of fish will not be good.