185 GPH to 1321 GPH.For Saltwater & Freshwater Aquariums.For Submersed or External Use.The Sicce Syncra Silent Pumps are a new generation of pumps, created to pair elevated performances with extreme silence and energy savings. Thanks to innovative technology, these pumps can be used in a great number of different applications. They're ideal for fresh water and marine aquariums, terrariums and turtle tanks, protein skimmers, water-cooling, indoor and outdoor fountains, and for any other application that requires a high-performance, extremely silent pump.