The Aqua-Supreme AP-3 recirculating air pump is designed to provide reliable, near-silent performance for a wide range of freshwater and marine applications. Housed in a sleek outer shell, the AP-3's energy efficient motor draws a mere 2.8 watts to deliver 1.45 psi to a single outlet. Flexible rubber stabilizers keep the AP-3 in place, while effectively absorbing vibrations to ensure quiet operation. With a maximum depth rating of 3.3 feet, this easy-to-use air pump is capable of powering a variety of aeration accessories accepting standard airline tubing. C-UL-US Listed for safety.