Pondh20 UV bulbs are designed for UV-C Filter & Clarifier systems for both Ponds and Aquariums. Value 24 Watt PLL 4 Pin UV Bulb 2 G11 Base Two Pack so keeps your filter effective for a full 12 months. Germicidal lamps operate at 253nm to greatly improve the efficiency of your filtration system when water passes by the UVC lamp. PondH2o UVC bulbs work to clear your pond or aquarium water by removing unsightly green algae . The strong ultraviolet light breaks down the algae in the water. For optimum UVC effectiveness, 24 Watt PLL 4 Pin UV Bulb 2 G11 Base bulbs should be changed every 6-12 months. Please make sure that you are purchasing the correct 4 pin UV Bulb by checking your filters instructions for the desired bulb wattage and length.
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