Product DescriptionFor 50 year, fishkeeping enthusiasts have looked to the Tetra name 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. The Tetra Whisper Air Pump gives you reliable, powerful and quiet air flow in your aquarium. This pump is for use in aquariums up to 40 gallons and provides minimum noise with maximum airflow. Keep the oxygen levels in your tank high to help keep your fish healthy. The Tetra Whisper Air Pump is shaped for silence. The patented dome shape and sound dampening chambers minimize turbulance and produce a smooth quiet stream of air. 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.Amazon.comTetra Whisper Air Pumps Help Keep Your Tank QuietTetra Whisper Air Pumps keep your aquarium oxygen levels high, helping keep your fish healthy. And with seven different sized pumps, there is sure to be one that is perfect for your aquarium. This line of air pumps has a unique dome shape and rubber feet. This flattens sound wave frequencies and helps prevent them from reflecting off of surfaces such as tables and shelves, allowing your pump to produce minimal noise. Whisper Air Pumps can be used in deep tanks (up to 8 feet deep), and have enough strength to power long decorator air stones, multiple air stones in one or more tanks, and protein skimmers for salt water aquariums. Every Tetra pump also comes with a lifetime limited warranty.What Size is Right for Me?ProductAquarium SizeWhisper Air Pump 10Up to 10 GallonsWhisper Air Pump 20Up to 20 GallonsWhisper Air Pump 40Up to 40 GallonsWhisper Air Pump 60Up to 60 GallonsWhisper Air Pump 100Up to 100 GallonsWhisper Air Pump 150Up to 150 GallonsWhisper Air Pump 300Up to 300 GallonsWhisper Pumps Produce a More Oxygenated Aquarium Tetra?s Whisper pumps will keep both you and your underwater friends happy. The pumps provide oxygen, which is good for your fish and tank, and also provide water movement. Combining these two benefits will lead to better water conditions overall. The underwater bubbles produced by the machine also add a mesmerizing touch enhancing the look of your aquarium. These pumps are the most powerful line that Tetra offers, ensuring that you are getting the best quality pump available.TetraCareSign up for TetraCare to help you be successful in your fish-keeping endeavor. This is a totally free program with the purchase of these aquarium systems and provides on-line and over the phone support. Once you register, you'll receive specially timed emails to guide you through the first six months of your aquarium experience and beyond. Free direct access to our TetraCare Team is just a phone call away. Just call 1-800-423-6458. Help is available seven days a week.