Tetra Pond Filter

Biological Pond Filter for sale. Item is in very good used condition. Item details: Biological pond filters use beneficial bacteria to break down harmful pollutants, creating a balanced and healthy pond ecosystem. Biological pond filters rely on beneficial bacteria to process fish waste, uneaten food, and other organic debris. These bacteria colonize high-surface-area media such as bio-balls, ceramic rings, foam, or matting, converting toxic ammonia and nitrites into less harmful nitrates through the nitrogen cycle. This natural process maintains water quality, supports oxygen levels, and promotes a healthy environment for fish and aquatic plants. Available from Amazon for $459.00, used a few years in Newmarket area >>> $100.00.