Adjustable Current pump for Reef aquariums. Coral Reef aquariums need strong water movements. Our NanoProp 5000 is a propeller pump to create strong currents with low power consumption. The shape of the propeller is computer optimized, for high flow and silent operation. 6-12V DC, low voltage motor, including adjustable safety transformer. Flow can be adjusted from 500 – 1,250 gph. Power uptake 3W-7W, adjustable. New developed vacuum suction cup for safe mounting inside the aquarium.