Hydor Koralia Nano Water Circulation PumpOur Hydor Koralia Nano Water Circulation Pump simulates natural river and reef currents to create a natural, realistic aquatic environment. Smaller than ever before, the new and improved Koralia Nano is super compact and efficient! Now with Hydor Koralia's new patented magnet suction cup support system. The sphere joint has been modified allowing better flow direction and this pump can also be safely connected to a timer. This unit is designed to be used with various wavemakers. Power absorbed is 3-5 watts. Ideal for both freshwater and saltwater applications.