The Rio Aqua Plus 2100 Powerhead Flow rate is 642 gph.Connections: 3/4" or 1" hose barb outlet25 Watts Dimensions: 5.1" X 2.7" X 3.7"Must be fully submersedCan be used with wet-dry filters, venturi protein skimmers, uv sterilizers, undergravel filtering systems, ponds and fountains in both fresh and salt water6 foot power cord UL listed models have a grounded power cord Rio Aqua Plus pumps have an enhanced motor design Performance charts (new window)