The Dymax Slim Flow Filter is an external filter designed to be mounted on any side of the aquarium. Unlike traditional internal head filters, this hanging filter does not take up space in the aquarium. Additionally, the cascading flow effect provides high levels of aeration filtration and increases oxygen levels for fish, corals, plants, and other living organisms in the aquarium. The Dymax Slim Flow Filter comes equipped with an extendable intake tube to capture debris near the bottom of the aquarium, as well as an adjustable water flow control handle to reduce filtration during feeding time.