Hydor Koralia Evolution Water Circulation PumpOur Hydor Koralia Evolution Water Circulation Pump is a compact, energy saving controllable pump with amazing, never seen before performance. Even the exclusive magnet suction-cup support has been improved becoming also a vibration-absorbing device! Find the model that better suits your needs, position it, plug it into a timer or directly into your electricity supply and watch your aquarium benefit from the powerful yet gentle flow. Now with Hydor Koralia's new patented magnet suction cup support system. Power absorbed is 4-6 watts. This unit is designed to be used with various wavemakers. Ideal for both freshwater and saltwater applications.