The TetraPond GreenFree UV Pond Water Clarifier is a new open box product designed for ponds up to 4,400 gallons. Our water treatment system, suitable for ponds, utilizes algae test/treatment parameters and offers UV clarification with the Tetra Pond UVC-18 model. Made by Tetra Pond, this product is ideal for maintaining clear and healthy pond water, perfect for outdoor living and backyard ponds. The product is manufactured in China and is a convenient solution for keeping your pond water pristine and crystal clear.