Fish manure can be cleaned when changing water. Changing water is an essential step in fish farming. Usually, there is no fixed cycle of changing water. It should be decided according to the maintenance of water quality. If the water quality is maintained well, it can be changed less. To change water, you need to pump water first, and generally pump water from the bottom, so that you can clean up the fish manure in the tank.

Biological cleaning method is more suitable for landscaping fish tanks. Some tool shrimps, tool snails, etc. can be raised, all of which have the function of cleaning feces, and because landscaping provides cover, they are not easy to be eaten by fish. However, it should be noted that not all tool snails can be put in, so it is best to raise some soda snails, which will not reproduce in the tank.

If the filter system of fish tank is powerful, it can also be filtered by filtering. Filtration needs a water pump, which can produce water flow, which can bring sundries in the cylinder into the filter box, thus achieving the filtering effect. It should be noted that although there seems to be no fish manure in the filter, the accumulation in the filter box will also pollute the water body.

In fact, it is ok to wait for the feces in the fish tank to decompose naturally. Although ammonia nitrogen will be produced after decomposition, there is a good nitrification system in the tank. Nitrifying bacteria can transform ammonia nitrogen, thus avoiding fish being poisoned and producing nitrate as nutrients for aquatic plants in the tank.