AQUANIQUE Pump with UV Clarifier, 950GPH The Pump with UV Clarifier 950 GPH is ideal for medium waterfalls up to 7 ft. tall. This 2-in-1 pump, with an integrated 6W UV Clarifier, purifies and takes the green out of pond water. As water passes over the UV bulb, it is cleaned of the microorganisms that cause green, murky water. We recommend changing the bulb annually. With a maximum pumping height of 12 ft., this energy-efficient pump helps power a waterfall. Pumps with UV Clarifiers come with an adaptor that features a built-in adjustable flow control to fine-tune the flow rate and help you achieve your desired water effect.