We carry a wide selection of biological and mechanical filter media, including filter pads, bulk filter media, K1 Kaldnes moving bed media, bio-balls, Matala sheets, activated carbon and more.
For more information on pond filtration see our Pond Filtration Basics page
Beneficial Bacteria are the ‘biological’ component of a biological filter. It is these bacteria that make your water safe for your fish; by breaking down the toxic ammonia they produce into harmless nitrates