Great ponds start with Tetra products! We have everything you need to set up and maintain a beautiful pond including water pumps and filters pond accessories and d?cor lighting and equipment and fish nutrition and water care products.The Tetra Pond Bio-Active Pressure Filter helps keep pond water clear and healthy. Using both mechanical and biological filtration to help maintain clear and healthy pond water this easy-to-use filter features unique open-profile bio-activators to provide a large surface area to clean with maximum efficiency as pond water is forced through. After running through the cycle the filtered water is returned to the pond by waterfall or stream.Once your pond is clean the last thing on your mind is getting your hands dirty cleaning out the filter. That?s why we designed an easy backflush valve that can help you complete the cleaning process efficiently. You won?t even need to open up the filter; just remove the backflush cap and you?re good to go. Backflushing prevents dir