Go Aquarium G4000 Protein Skimmer for Saltwater Aquariums, 660-Gallon Rated for tanks up to 660 gallons Dc-2500 pump (2x): 70w, 1300 gal/hr. flow rate Footprint: 12"l x 11"w x 24"h Air intake: 1800 L/hr. Suggested Water Level: 9" - 12"