ProClear Aquatics Motorized Protein Skimmer for tanks up to 150 gallons. These skimmers do exactly what they were made to do. Extract foam and organic wastes fast. Protein skimmers ensure that your aquatic ecosystem is protected against harmful bacteria, algae feeding nitrates and phosphates, while helping ensure quick removal of organic wastes. In Sump Operation. Plug-in and Go. Venturi Driven, Spiral Air-Water Movement Inside Skimmer, Pump Included. Counter-Current Design Promotes Maximum Air-Water Contact Time, Fixed Output. Effluent Drain Hose Included, Removable Collection Cup With Fittings for Remote Drain-Off. Air Injection Valve, Easy to Install With Complete Instructions. Motorized 150 Dimensions 22 in Tall x 4 in Wide - CA1800 Pump Included.All Pro Clear Aquatics (formerly Aqua Clear Aquatics) Skimmer units carry a manufacturer"s LIFETIME WARRANTY against materials and defects in workmanship.