LZ is a grass tank, snails are usually accompanied by water plants into your tank, will soon be a large number of reproduction, snails will eat water plants, serious can be found in the water plants appear large and small corners, very unattractive, we must kill it.1) Place snail-eating fish (such as eight dolls), can eliminate most of the snails, but must pay attention to some of the dolls will attack the fish. The figure of eight dolls mainly eat snails, so if there are many snails in the tank, you can use them to clean up the cleaning. However, once the snails are finished, you have to feed it separately, otherwise it will attack the water plants and then the fish, you can also buy a submarine to eat snails at home, some people said that method is very good. But it will eat black shell shrimp and bite lampreys! 2) Use snail remover, it can kill most of the snails, and soak the snail remover first when you buy new water plants, it can effectively prevent snails from spreading. But there is a bad thing about this method, that is, the fish will die if you are not careful.3)Hand Catching