Aqueon QuietFlow Air Pump

Aqueon QuietFlow Air Pumps provide powerful air flow with advanced features to virtually eliminate operating noise. Unlike other air pumps, QuietFlow models feature vertical hose outlets and check valves to prevent airline kinking, with a rubber base to absorb vibrations.
Virtually silent operation and contemporary upright design
Vertical hose outlet to help avoid kinking in airline tube
Rubber base absorbs vibration for less noise
An internal check valve provides extra support to prevent kinking and backflow for long, quiet, efficient operation.

Specifications:
Air Pump 10: 2-10 gallons
Air Pump 20: 11-20 gallons
Air Pump 60: 21-60 gallons
Air Pump 100: 61-100 gallons