Hagen Marina Model-100 Quite Aquarium Air Pump - Up to 40 Gallons

Marina 100 Air Pump – An aquarium air pump suited for medium aquariums (around 20–30 gallons). The Marina 100 provides reliable airflow to run a couple of airstones, ornaments, or small filters. It’s designed for quiet performance, incorporating quality diaphragms and noise-dampening technology, so it won’t be overly loud in your room. This pump helps increase oxygen levels in your tank – which is beneficial for your fish and helpful if you have low-water-movement setups. Overall, it’s a solid mid-range air pump to keep your tank’s water well-aerated and your fish healthy.