Efficient Oxygen Pump for Aquariums Up to 230L. If you are committed to enhancing the health and vitality of your fish, our Efficient Oxygen Pump is an essential addition to your aquarium. Remarkably Quiet: Equipped with advanced diaphragms and 4 shockproof rubber feet, this pump minimizes noise to below 45 dB—comparable to the gentle hum of a refrigerator.
eBay