If there is something dirty under the bottom sand of the fish tank, you can use a siphon to pump out the dirt at the bottom of the tank. If the bottom sand is also polluted, you need to fish out the fish, empty all the water, and then pour out the bottom sands and clean them several times. After that, you also need to disinfect them with solutions such as potassium permanganate. After disinfection, wash them again. Before you can put it back in the bottom of the tank.In order to reduce the trouble of cleaning, we can feed less feed at ordinary times.
1, ceramsite: ceramsite is one of the common bottom sand, it does not have any nutrients, but can better culture nitrifying bacteria, so that it can attach to the above.General small tropical fish, then the bottom of the tank shop it is very good, some large and medium-sized fish can also be used, which also helps to maintain water quality.
2. Water grass mud: If it is a grass tank, water grass mud is the most appropriate, because you can plant water grass on it, and general fish tanks can also use it.However, it should be noted that the water grass mud will be powdered after a long time, this time must turn the tank, otherwise it will be harmful to the fish.
3. Tropical rain forest sand: Tropical rain forest sand is generally used as the bottom sand for raising South American aquatic animals, such as short bream, rat fish, etc. This kind of sand is generally red and relatively small, so the feces will not leak down, which is convenient for cleaning.
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