The Hagen 11116 is the correct air pump for the following aquariums:
The Marina 200 Fish Tank Aquarium Air Pump can be used in aquariums roughly 35 to 60 gallons size. The Marina air pump performs efficiently and quietly, and provides air for increasing water movement and turbulence. This high power air pump is designed for rich oxygenated water and can also operate air stones, air curtains, and air-actuated ornaments. This fish tank air pump features two outlets and soft rubber feet for vibration suppression.
Marina 200 Fish Tank Aquarium Air Pump specifications: