Cost effective Octopus Protein Skimmer Pumps provide exceptional performance at an economical price. Direct replacement pumps for newer Reef Octopus Classic protein skimmers modified with large grey threaded outputs. Replacement pump for the following newer skimmer models with LARGE grey threaded outputs: CLSC-150 (NWB-150), CLSC-150EXT (DNWB150), CLSC-2000HOB (BH-2000), CLSC-150SSS (NWB-150SSS), SRO-2000INT, DCS-150INT, Diablo XS160/Extreme *CLSC-150int, SRO-2000int and DCS-150int no additional adapter required. Features Low Wattage Direct Replacement Pump Easy to Maintain Pinwheel Impeller Submersible 2yr warranty on Pump/ 1yr warranty on rotor Pump Information Aquatrance 2000s Pinwheel Pump Max Flow: 198gph Max Air:720L/H, 25SCFH Power Consumption: 18 Watts Dimensions:5.3" x 2.8" x 5.7" *Air and water results will vary depending on aquarium setup