Hagen Elite 803 Air Pump. **** PRODUCT MANUAL **** The ELITE 803 air pump is a reliable source of delivering air for air operated items such as air stones, air curtains, air-actuated ornaments or for adding movement thus oxygen to any aquarium. The ELITE 803 combines high performance output with quiet operation. The single outlet ELITE 803 air pump is ideal for aquariums up to 20 u.s. gal. (76 L) Elite 803 Air Pump Specifications: - 1 outlet - 3500 cm³/minute - 4.0 P.S.I. - 4.0 Watts/hour - Recommended Aquarium 20 gal