Fulfilled by our friends at Dog Hugs Cat Upgrade your Pondmaster UV Filter with the Pondmaster UV Quartz Sleeve Replacement. Expertly designed for Pondmaster ProLine UV Filters this replacement Quartz Sleeve is a reliable solution for maintaining the efficiency of your UV Clarifier or UV Sterilizer. The sleeve isolates the bulb to maximise UV output ensuring optimal performance in keeping your pond water crystal clear. Crafted to the highest standards this Quartz Sleeve is available in 10 Watt 20 Watt and 40 Watt sizes to fit various models perfectly. Say goodbye to cloudy water issues by investing in this essential UV Filter component today.