The Maxi-Jet multi-use water pump is three pumps in one: power head (moves 295 gph), utility pump (max head 6 ft.)and now features a circulation pump option (moves 1300 gph). Still the best power head for powering undergravel filters and running wave maker timers, as well as running small fountains, calcium reactors and skimmers. New to the Maxi-Jet, the conversion kit in the box to turn the power head into a prop style circulation pump for ultimate water movement inside the aquarium for the least amount of energy! The most fully adaptable pump available.