The powerful Tetra FilterJet 900 aquarium filter is suitable for aquariums with a volume of 170 - 230 l and cleans them particularly thoroughly thanks to the combination of mechanical and biological filtration. In this way, both coarse and fine dirt particles are removed from the aquarium water and at the same time the biological balance required for an intact aquarium is achieved. Thanks to its easy installation, the Tetra FilterJet 900 is ready for use within seconds. The adjustable outlet nozzle allows optimum water circulation and provides the aquarium water with sufficient oxygen.Tetra FilterJet 900+ compact aquarium internal filter for mechanical and biological filtration+ three different mounting options allow easy attachment of the filter to the aquarium+ the washable filter sponge can be easily removed for cleaning+ powerful and quiet internal filter+ for aquariums from 170-230 l+ with adjustable Venturi-Valve for oxygen enrichment+ adjustable outlet nozzle for optimum control