Algreen MaxFlo 16000 to 4000 GPH Pond and Waterfall Pump for Gardening Performance proven water-fall pump circulates 4000(gph) gallons per hour Filter protection grid shields large debris Excellent for waterfalls Energy efficient 25 foot power cable Fish and plant safe Submersible under water and can be positioned vertically or horizontally U.L listed with a 2 year manufacturers warranty