PondH2o UV bulbs are designed for UV-C Filter & Clarifier systems for both Ponds and Aquariums. Value 40 Watt T5 4 Pin UVC Germicidal Lamp Two Pack so keeps your filter effective for a full 12 months. Greenwater or single cell algae problems in Water Garden Ponds can be eradicated using a UV light clarifier. UV-C light germicidal Ultraviolet lamp or Ultraviolet UV Germicidal Bulbs help control the growth of algae. The increased water clarity improves fish viewing and it also improves the health of the fish. For Best Results Change 40 Watt T5 4 Pin UVC Germicidal Lamp every 6 Months or 8000 hours.
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