Marina A75 Air Pump - 25 US gal. Marina Air Pumps are efficiently designed to increase water movement in aquariums for proper oxygenation, which helps to create a healthier environment for fish and live plants. They combine powerful and consistent airflow with silent operation for effective results. Five model sizes are available to accommodate most popular aquarium sizes. Ideal for aquariums up to 25 US Gal / 100 L Efficient: For increased oxygenation creating a healthy environment Powerful Airflow: Efficient design for optimal flow Silent: Sound dampening shell and vibration suppressing rubber feet Durable and Reliable: Consistent high-performance output For use in freshwater and saltwater aquariums Required: Airline tubing Recommended: Check Valve Single Outlet Output: 60 L per Hour