The Marina 11112 is the correct air pump for the following:
The Marina 75 Aquarium Air Pump is a quiet running pump that provides reliability of air flow for increasing water movement and turbulence. Also known as part number 11112, this high power air pump can be used to operate airstones, air curtains and other air-actuated ornaments.
Marina 75 Aquarium Air Pump Specifications:
This Marina fish tank air pump has high performance output. The soft rubber feet suppresses vibration and contains a durable, long lasting diaphragm.