they have a tendency to cause an excess of water flow in smaller tanks. Other types, such as sponge filters, are ideal in this environment.

Advantages of this type of filter are that they allow for a selection of different types of filter media depending on the tank needs, and that they are easy to clean without disturbing the inhabitants of the tank because they sit on the outside of the fish tank. Disadvantages of power filters include their smaller capacity for filter media compared to canister filters, their aforementioned tendency