To keep your fish and plants healthy a permanently filtration of the aquarium water is needed. The Tetra EX 1500 plus complete external filter set ensures excellent water quality for fish in aquariums up to 300-600l volume.  As a complete set, all filter materials are included to offer a quick and easy activation and an immediate commission of the filter. The multi basket construction system and different filter materials not only clean the aquarium water reliably and efficiently by breaking down excess nutrients, but also provide a fascinating view into the aquarium life by making the aquarium water crystal-clear.