Hagen Fluval Q.5 Air Pump:
The Fluval Q.5 Air Pump produces consistent air flow with its advanced swing-arm and diaphragm design. Powerful yet extremely quiet, noise is minimized by the thick double-wall outer casing, integrated pump well and baffle chamber. The Q.5 has a single outlet and provides lasting and reliable performance for aquariums up to 50 gallons.
5.5"L x 5"W x 3"H