Needlewheel protein skimmer BM-180CS-P Capability : 1000L-1500L(265G -395G) pump:PSK2500 Pump power: 21W, 110V 60Hz air intake : 900L/H Dimensions: 300*270*555mm(11.8" * 10.6" * 21.8") cylinder: MAX 7" Water Level :9.5"-11"