Powerful yet extremely quiet, the Fluval Q1 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 Q1 is quality constructed and will provide lasting and reliable performance for aquariums up to 300 L (80 U.S. gal). Ultra Quiet Powerful Reliable