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Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.Important: Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership. For 50 year, fishkeeping enthusiasts have looked to the Tetra name for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need–-from a large variety of quality fish food and innovative equipment to test kits and decor. The Bio-Active Pressure Filter works to keep your pond clean and healthy with both mechanical and biological filtration. This easy-to-use filter features a unique open profile bio-activator that provides a large surface area and unrestricted water flow to all surfaces for improved filtering. A simple back flush valve allows for fast cleaning. This filter works for ponds up to 1500 gallons. Bio-Active Pressure Filters come equipped with bio-activators which offer superior filtration and back flush performance over foam. In normal filtration operation, these bio-activators easily trap dirt and debris from your pond and because of their shape they provide a large active surface area for the beneficial bacteria to colonize for upgraded biological filtration. During the back flush operation, bio-activators provide unrestricted water flow to all the surfaces so that dirt and debris are thoroughly removed while leaving the beneficial bacteria on the bio-activator surfaces intact and robust. The Easy Solution for a Clear and Healthy PondThe TetraPond Bio-Active Pressure Filter works to keep your pond clean and healthy with both mechanical and biological filtration. This easy-to-use filter features a unique open profile bio-activator that provides a large surface area and unrestricted water flow to all surfaces for improved filtering. A simple back flush valve allows for fast cleaning.Pond water flows down through the bio-activators which remove suspended debris and dirt from the water.Biological Filtration occurs on the massive surface areas found in the bio-activators. Beneficial bacteria will naturally colonize on the surface area and convert harmful pollutants in the water into relatively harmless nitrates, which are absorbed by the aquatic plants and removed by partial water changes. This is known as the “Nitrogen Cycle”.TetraPond Bio-Active Pressure Filters come equipped with bio-activators which offer superior filtration and back flush performance over foam. In normal filtration operation, these bio-activators easily trap dirt and debris from your pond and because of their shape they provide a large active surface area for the beneficial bacteria to colonize for upgraded biological filtration. During the back flush operation, bio-activators provide unrestricted water flow to all the surfaces so that dirt and debris are thoroughly removed while leaving the beneficial bacteria on the bio-activator surfaces intact and robust.For high performance, power your TetraPond Bio-Active Pressure Filter with a Tetra Pond DHP series clog-free debris handling pump. This combination of pump and filter provides the easy solution for pond maintenance and care.Do not use with pumps that exceed 4500 gallons per hour. This could damage the filter.Do not use pumps with flows less than 2500 gal/hr. A minimum of 2500 gallons per hour is necessary to perform the back flush operation.Note: All pressure filters restrict the flow from your pump. Expect about a 45% reduction in the water flow through the filter.See label To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.







