The very quiet yet powerful Tetra Aquarium Air Pump is perfect for adding extra oxygen to your fish tank, running filters and air stones, as well as operating air-driven ornaments. This excellent quality aquarium air pump has state-of-the-art design features that are in conjunction with leading sound engineers, with an adjustable air flow setting. This pump runs almost silently so that it's guaranteed not to disturb your fish. Pleasantly quiet, thanks to sound-absorbing chambers Special vibration-absorbing rubber feet Excellent quality and reliability Highly consistent air flow thanks to powerful, durable membrane Includes air tap for adjusting the air flow