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-200INT (NWB 200), CLSC-200EXT (DNWB200), Diablo 200, Extreme 200, Diablo 225*, Classic 225*, SRO 3000int * Requires special output adapter to mate to skimmer body. Features Low Wattage Direct Replacement Pump Easy to Maintain Pinwheel Impeller Submersible 2yr warranty on Pump/ 1yr warranty on rotor Pump Information Aquatrance 3000s Pinwheel Pump Max Flow: 211gph Max Air: 880L/H, 31SCFH Power Consumption: 35 Watts Dimensions:5.3" x 2.8" x 5.7" *Air and water results will vary depending on aquarium setup