DYMAX eZ Filter (Internal Filter)Dymax eZ Filter is a highly efficient and easy to maintain filtration system which is as complete as it can be. This filter is equipped with a powerful power head that draw water from both surface and bottom of the aquarium. Suitable for most aquarium. easy maintenance. For both freshwater & marine. attachable skimmer feature. Filtration media included. As a complete filtration system, this unit has all filter media in the most practical filter basket