Penn-Plax Cascade Nano Air Pump
The Silent Air X7 Aquarium Air Pump is low-cost solution that does not skimp on power. Designed with a powerful motor, a unique diaphragm, and a quiet casing, the pump is virtually silent. The SAX7 features a diaphragm mount armature, non-skid feet, and silicone polymer flappers. The pump will provide high performance, durability and reliability. Silent Air pumps come in multiple sizes designed to meet the standard needs of most aquariums ranging from 10 to 75 gallons in size.