Needlewheel protein skimmer BM-NAC5 Capability : 300L-500L (80G-135G) Pump:atman ph2000 Pump power: 11W, 110V 60Hz Air intake : 450L/H Dimensions:297*130*498 mm ( 11.7" * 5.1" * 19.6 ") Cylinder: 5" Water Level :9.5"-11"