The EVO 1001 is designed for installation in any mode: as a “hang on”, it is simply hung over the edge of the aquarium. Only the venturi pump is inside the tank. The power-saving and efficient pump DC Runner 1000 “ULTRA SILENT” serves as a venturi pump (incl. DC motor, 24 V) with power consumption of max. 12 watts. Polished ceramic bearings and shafts for brilliant silent performance and a maintenance-free steady use. The 3D needle wheel will provide a large amount of air and optimum bubble structure. The included Silencer ensures an almost soundless operation. In the cabinet, it can be installed inside or outside the filter sump. It is designed to fit into nearly every standard aquarium cabinet.