The Tetra Whisper Air Pump’s patented dome shape and sound-dampening chambers minimize turbulence and produce a smooth quiet stream of air. Its wide footprint rubber feet and suspended pump motor eliminate sound-producing vibrations. Thick walls insulate motor noise and powerful diaphragms provide ample airflow for deep water applications. Uses standard-size aquarium tubing. Select the proper size air pump for your tank. Pump measures 3.88 in x 2.75 in x 5.5 in. Since 1951 Tetra has developed the world’s most comprehensive body of fish food knowledge and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you re an experienced hobbyist or just starting out Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor.