Penn Plax is a name that stands for Quality Innovation and Integrity In the Pet Industry for over 50 years Experience a great line of Pet Products in all categories! Penn-Plax is committed to creating and manufacturing innovative pet products for first-time pet owners and serious hobbyists alike. Air pump -extra large 110v for up to 55 gallon aquariums. High-tech superior power. Reliability and high performance you can count on. Acoustically designed for smooth ultra-quiet operation. Category: Aquarium Supplies/Maintenance. Sub Category: Pumps/Aeration. Cubes: 0.0012. Weight: 1.0800.