Needlewheel protein skimmer CS6 Capability : 400L-600L (100G-160G) Pump:atman psk600 Pump power: 18W, 110V 60Hz Air intake : 500L/H Dimensions: 170 * 265 * 500 mm ( 6.7″ * 10.4″ * 19.6 “) Cylinder: 6″ Water Level :9.5″-11″