The WAVEREEF DC PROTEIN SKIMMER is an ultra-compact cone body protein skimmer that offers exceptional filtration for marine aquariums. Equipped with a smart controller with integrated memory,WaveReef apply the revoluationary sinewave technology to drive the skimmer at high performance. The sinewave technology can run much the pump more stably and quitely. The pump features a true slow startup where the pump slowly ramps up from zero RPM to the full preset speed over a period of approximately 8 seconds . All aspects of this protein skimmer are designed to surpass many challenges that other skimmers on the market miss out on.