OxyMax 400 air pump with adjustable flow control provides your aquarium with constant steady air flow. Suitable for both marine and freshwater tanks, this pump is designed with vibration resistant rubber feet and rubber eye hook, and insulated housing to prevent excess vibration and noise. Customize the bubble patterns with the adjustable diffusers. With the pumps rubber feet and eye hook you can install the OxyMax either horizontally or vertically depending on your aquarium setup. Designed using German engineering, this pump is protected with a 3 year warranty.