The water in the fish tank is freshly replaced, why does it still smell fishy? What to do?

The fishy smell of fish tank water is basically caused by too much feeding, too much fish feces, and long-term water change, which leads to too much water nutrition, microbial multiplication, and more and more decaying substances. Frequent filtration, replacement of filter media, injection of oxygen, enhance the self-purification ability of water quality, and change the water regularly on time to ensure water quality. Reduce the amount and frequency of feedings.

Use a fecal suction device to clean the fish feces at the bottom of the tank frequently, if there is bottom sand at the bottom of the tank, be sure to wash the bottom sand frequently with a sand washer to prevent the deposition of rotten substances.

1. Some friends like to add some sand, landscape stones, driftwood, etc. to the fish tank, and these decorations also need to be disinfected to remove the fish. This completely removes the fishy smell from the fish tank. If some of the decorations are more tasteful, the aquarists will have to replace them.

2. If the smell of the fish tank is very bad, the aquarists need to transfer the fish inside to other containers and put all the water in the fish tank clean. Aquarists should first clean the fish tank thoroughly with disinfectant. This not only acts as a sterilizer, but also removes unpleasant odors.

Aquarists need to note that after soaking in disinfectant, aquarists need to wash off thoroughly with clean water and expose the tank to the hot sun. Friends with conditions can also use ultraviolet lamps.

Irradiate the fish tank so that the smell is completely removed.

3. Although some fish tanks have been equipped with a filtration system, the frequency of water change is relatively low. But long-term residual food residues, aquatic plants.

and feces will rot, which will cause the fish tank to smell fishy. Therefore, even if there is a filter in the fish tank, aquarists should clean it regularly to keep the water clean and not make the fish tank stink.

A slight fishy smell is normal, and the serious one is in the ornamental fish itself.

The water in the fish tank is very clear, but at the same time there is a fishy smell, mainly because there are dead fish or dead aquatic plants in the fish tank, which are not salvaged in time to breed a lot of bacteria, so it will lead to a fishy smell in the water, and because there is too much fish excrement in the process of raising fish, there will be insufficient nitrifying bacteria and failure to decompose in time without timely treatment, so there will also be fish odor. In addition, because the fish feces are mixed with the rest of the feed, the water will also become smelly. Friends who raise fish should often clean the fish tank thoroughly, and also need to buy some special equipment to keep the fish tank without fishy smell.

The water in the fish tank is very clear, and the reason for the fishy smell is mainly because there are dead fish and stagnant aquatic plants that are not fished out in time, resulting in bacterial reproduction, and because the fish excrement is too much and does not decompose in time, it will also lead to fishy odor.

<> if the water in the fish tank is clear but smells fishy, it means that there is ammonia nitrogen in the water.

If the content is too high, it is necessary to change the water in time and pay attention to the cultivation of nitrifying bacteria.

Nitrifying bacteria are beneficial bacteria that convert ammonia nitrogen from water into nitrite.

And further converted into nitrate, so as to avoid fish being poisoned, has a good maintenance effect on water quality, usually in the open tank to raise water to begin to cultivate.

If the water in the fish tank smells fishy, you need to change the water in the fish tank immediately. The fishy smell in the water is mainly due to the decomposition of organic matter to produce a large amount of ammonia nitrogen, which is not only unpleasant, but also affects the health of the fish, causes certain poison to them, and even leads to the mass death of the fish. The content of ammonia nitrogen in the water can be reduced by changing the water, and attention should be paid to cultivating nitrifying bacteria during the daily feeding process, which can also avoid the fishy smell of the water.

If the water in the fish tank smells fishy, you need to change the water in the fish tank immediately. The fishy smell in the water is mainly due to the decomposition of organic matter to produce a large amount of ammonia nitrogen, which is not only unpleasant, but also affects the health of the fish, causes certain poison to them, and even leads to the mass death of the fish. The content of ammonia nitrogen in the water can be reduced by changing the water, and attention should be paid to cultivating nitrifying bacteria during the daily feeding process, which can also avoid the fishy smell of the water.

1. Too many fish: The reason why the water in the fish tank has a fishy smell is because there are too many fish, and the fish will excrete in addition to some secretions, which will lead to the deterioration of water quality. The best way to solve this problem is to keep a few fewer fish, or change to a larger tank, which can also reduce the density.

2. Large amount of feeding: If you usually feed too much food, it will also make the water smell fishy. In view of this situation, it is necessary to reduce feeding, and feed a small amount many times a day, and ensure that the fish are eaten in about 3 minutes after each feeding, and there is no residual bait left.

3. Too little water change: the water needs to be changed in the daily feeding process, and if the water change is too little, the water quality will still deteriorate, resulting in some fishy smell. In this case, it is necessary to increase the amount of water exchange, or shorten the water change cycle, but the shortest time should be changed once every three days, and the maximum amount should not exceed one-third at a time.

If there is a fishy smell but the water is very clear in the fish tank, it may be because of the dead fish or dead aquatic plants in the tank, or a large amount of excrement in the fish tank has not been treated in time, then the fish tank will have a clear water but fishy smell.

If in the process of raising fish, the water in the fish tank is very clear but has a fishy smell, it may be because there are dead fish or dead aquatic plants in the fish tank, which are not salvaged in time and breed a large number of bacteria.

Or in the process of raising fish, the fish excrement in the fish tank is too much, which is not treated in time, and the nitrifying bacteria cannot decompose the excrement in time, so it will also cause the fishy smell in the fish tank.

Therefore, in the process of raising fish, it is necessary to clean the fish tank regularly and replace the water in the tank to ensure that the fish have a good living space, otherwise the bacteria in the fish tank will multiply too much, and the fish will easily get sick or even die.

The solution to the fishy smell of fish tank water is to strengthen filtration and additionActivated charcoal, change the water frequently, reduce feeding, clean the fish tank filtration system, etc.

1. Strengthen filtration

If your fish tank or fish pond is not well filtered and the nitrification system is not perfect, it will cause a lot of ammonia to accumulate in the fish tank.

Fish excrement or food debris is released), if there is a foul smell, it is very serious and may cause your fish to die. In view of this phenomenon, it is necessary to strengthen filtration, improve the nitrification system, and place enough filter cotton and glass rings.

2. Add activated carbon

Add activated carbon to the filter material, and it is better to pack a package of activated carbon for aquarium, clean it in advance and then filter it into the fish tank. After a few months, it will need to be withdrawn or replaced with a new one. Activated charcoal has the effect of deodorizing and adsorbing pigments.

3. Change the water frequently

If there is a peculiar smell caused by too many fish farming, then reduce the density and then change the water frequently to improve. It is to change the water by one-third every 3-7 days. To change the water, you must change the tap water at the same temperature as the fish tank, and the temperature difference should not exceed 3 degrees, preferably the tap water that has been dried.

4. Reduce feeding

Reduce the amount of feeding, the standard is 2 times a day and eat in 5 minutes each time, you can reduce the feeding once a day and eat in 2 minutes each time.

5. Clean the fish tank filtration system

Clean the fish tank filtration system, wash half of it first, and then a week later.

Wash the other half again to avoid nitrifying bacteria.

Collapse of the microflora.