Specifications •Needlewheel Protein Skimmer •Model: BM-NAC3.5 SKIMMER •Tank Size: 25-80 Gallons •Pump: Atman ph1100 •Pump power: 8W •Air Intake: 200 L/hr •Dimensions: 4.5" x 6.6" x 17.1" •Cylinder: 4" •Water Level: 8"-10"