The Marina 200 Air Pump combines high performance output with quiet operation. It is 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. The Marina 200 Air Pump has two outlets, soft rubber feet which suppress vibration and it is ideal for aquariums 35 to 60 US gallons.