Marina 50 Air Pump by Hagen 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…Marina 50 Air Pump by Hagen.The Marina 50 air pump combines high performance output with quiet operation. A reliable source of air for increasing water movement and turbulence for proper oxygenation, and can also be used to operate items such as air stones, air curtains and air-actuated ornaments. * Marina 50 has a single outlet and is ideal for aquariums 5 to 15 U.S. gal. (10 to 60 L) * Quiet running * Reliable performance * Powerful airflow * Sound dampening pump cover * Soft rubber feet suppress vibration * Durable, long lasting diaphragmProduct code: 2169Item No. AE-A11110