Pond pumps give a choice of GPH output to meet the requirements of the most critical water gardener. All our pumps are 100% water tested, have 25' power cords, and come with a 2 year limited warranty. Our 450, 850, and 1250 GPH pumps come with a built-in prefilter to aid in the water filtration process. Magnetic drive pumps run by an electrically charged magnet that causes the impeller to spin and circulate water through the pump. Magnetic drive pumps are environmentally safe, have no coolants, and use less energy than direct drive pumps. Direct drive pumps are more powerful and provide higher GPH output than magnetic drive pumps. These pumps are energy efficient, water cooled, and use no oil. Direct drive pumps are designed for use in dirty water applications where the possibility of water impurities is high. No. 200450: 450 GPH, magnetic drive No. 200850: 850 GPH, magnetic drive No. 201250: 1250 GPH, direct drive No. 202000: 2000 GPH, direct drive No. 203000: 3000 GPH, direct drive