Jebao TW Series Wavemaker with Controller High performance, powerful, water flow combined with low energy consumption Low voltage, safe, reliable power supply, 12w-40w depending on the mode Ceramic shaft for long life and durability, recommend for 60-150 gallon tank 360 degree rotation on a magnetic bracket, night sensor - automatically detects when tank lights go out and slows the pump Fully adjustable flow that you control, flow rate from 1100gph to 3400gph