Replacement pump for the Aqua One Maxi 101 Filter, suitable for Aqua One AquaNano 22, Aqua One AquaNano 25, and Aqua One AquaNano 30 tanks. To extend the life of your pump, clean it out once every month, this should help improve the flow and the operation of the powerhead. You may also want to clean the impeller out at the same time to ensure the pump has been cleaned thoroughly. Key Features: Quiet and efficient, Variable flow control, Completely submersible, Suitable for freshwater and marine aquariums, Factory replacement, Minimal maintenance. Suitable for both fresh and saltwater aquariums.