The RLXT type aquarium pumps are best suited for circulation only--situations where water encounters very little back pressure. The MD pumps have Japanese motors.Flow rate: 540 gphMax head: 8.2 feetAmps: .5Dimensions: 8.5" X 3.5" X 4.8"Connections: 1" MPT Inlet / 1" MPT OutletDoes not come with a plugPerformance charts (new window)Further specifications (pdf file in new window)