The Tetra Aquarium Internal Filter is an easy-to-use internal filter, ideal for keeping aquarium water healthy and for mechanical, biological, and chemical filtering. Complete with media and pipework, simply attach the provided suckers and fix to the side of the aquarium. Designed for easy maintenance, there is no need to remove the entire filter, as all individual components can be quickly and easily removed. All internal filters have two filter chambers. A filter foam can always remain in the filter chamber during the cleaning process—minimizing the loss of beneficial bacteria. The device stays in the aquarium during the cleaning process, including a practical filter medium removal device for clean application. Continuously control the flow rate for the aquarium.