Homasy 400GPH Submersible Pump 25W Ultra Quiet Fountain Water Pump with 5.9ft Power Cord, 2 Nozzles for Aquarium, Fish Tank, Pond, Hydroponics, StatuaryWATER FLOW CONTROL. An Adjustable Knob to control the water flow rate, so you can get just the amount of water pressure you want. Maximum flow rate: 400GPH STRONG POWER and HIGH LIFT. Max Lift Height: 6. 9ft. 25W high efficiency motor for energy saving. Lift height is a max height the water goes up, after connecting the water pipe to the nozzle (Make sure the joint sealed securely and tightly) ULTRA QUIET DESIGN with 2 NOZZLES (0. 51in and 0. 62in).