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Tetra GreenFree Ultraviolet Pond Clarifier, 18 watt | On Sale | HealthyPets
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Replacement UV Lamp 18 W watt 2G11 for use with Clear Choice Filter PF4000 - Light Spectrum Enterprises, Inc
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2 X 18W 18 Watt PLL UV/UVC Bulb/Lamp/Tube/Light Pond Filter Clarifier Steriliser | eBay
OASE Vitronic 18 UV-C Pond Clarifier » PondScapeOnline
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Amazon.com : PONDMASTER Danner 15820 18-Watt UV Ultraviolet Conversion Kit : Patio, Lawn & Garden
