Powerful yet extremely quiet, the Fluval Q2 Air Pump produces consistent air flow thanks to an advanced swing-arm and diaphragm design. A thick double-wall outer casing, integrated pump well and noise-suppressing baffle chamber make Fluval one of the quietest air pumps to date. The Q2 is quality constructed and will provide lasting and reliable performance for aquariums up to 600 L (160 U.S. gal). Ultra Quiet Powerful Reliable Other model available: -A850 Fluval Q1 Air Pump