Catalina Aquarium CA 3000 Aquarium Pump 1000 GPH Good for 200 to 250 gallon aquariums Output 1000 GPH Good for aquarium circulation, powerhead, sump pumps, pond pumps protein skimmers Takes a 3/4 inch male PVC fitting or a 5/8 inch hose 3 Venturi air injection ports fora protein skimmer