The Marina 11110 is the correct replacement for
The Marina 50 Air Pump is constructed with a durable, long-lasting diaphragm that provides powerful airflow and is a reliable source of air. This quiet running, high power air pump, also known as part number 11110, increases water movement and turbulence for proper oxygenation.
Marina Air Pump specifications:
This Marina aquarium air pump can also be used to maneuver air curtains, stones and other air-actuated ornaments. The soft rubber feet help to suppress vibration. The Hagen Marina 50 Aquarium Air Pump is constructed with a sound dampening pump cover and offers reliable performance.