Aquarium maintenance is a very important process in keeping fish and plants alive. Aquarium filters are the instruments that keep the tank clear of waste and particles. Fish waste is dangerous for the fish health. In the wild fish waste is diluted, but the aquarium is much smaller, and the waste is toxic.
Fish waste produces ammonia which is toxic in large amounts. A small tank with large fish will produce large amounts of ammonia. Furthermore ammonia can break down into nitrate. Nitrate becomes toxic when it reaches high levels, therefore keep the water clean.
