If the nitrification system of the grass tank has been established, the fish manure does not need to be cleaned. The ammonia nitrogen produced after the manure is decomposed by microorganisms will be further converted by nitrifying bacteria into nitrate, which is harmless to the fish. Moreover, this substance is a very good nitrogen fertilizer and can be absorbed by aquatic plants. However, if the nitrifying bacteria in the tank are insufficient and can not convert ammonia nitrogen, it will be harmful to the health of fish, so it needs to be cleaned up in time to avoid poisoning.
1. Traffic light: Traffic light is a kind of light fish, about 3-4 cm in length, with red and green stripes on both sides of the body, so it gets this name. This kind of fish likes to move in the bottom of the water, and its feeding habits are relatively miscellaneous, so it can be fed with artificial feed and fish and insects at ordinary times. In addition, not only traffic lights, light fish are very suitable for raising in the grass tank.
2. Mickey fish: Mickey fish is an artificially cultivated freshwater ornamental fish. It belongs to a kind of moonlight fish. There are three black spots on its tail. It looks very much like Mickey Mouse, so it is named Mickey fish. The small size of this fish makes it suitable for keeping in grass tanks, and it can be mixed with other small tropical fish.
3, guppy: guppy is a relatively common small tropical fish, its tail is relatively large, the color is also very gorgeous, looks very beautiful. This kind of fish can be kept in a grass tank, which is easy to keep and very active.
