What are the advantages and disadvantages of internal versus external filters?

The internal aquarium filter is compact and is placed inside the aquarium. It draws in water through a pump mechanism and passes it through various filter media to remove dirt, excess food and harmful water components. Internal filters are easy to install and ideal for smaller aquariums or those with little space around the tank.

An external aquarium filter, on the other hand, is positioned outside the aquarium and works by using hoses to transport the water from the tank into the filter and back. These filters often offer greater filter capacity and more efficient cleaning, as they can accommodate a wider range of filter media. External filters are particularly suitable for larger aquariums and offer the advantage that they do not take up any space in the aquarium and do not impair the view in the aquarium.

Both filter types have their advantages and disadvantages, and the choice between internal and external filters depends on various factors, such as the size of the aquarium, the specific needs of the fish and the space available.