5 different types of filter media for every type of cleaning 1. Tetratec CR Ceramic Filter Rings remove large particles of waste and help to even out the flow of water through the filter. They can be cleaned with tap water and do not need regular replacement 2. TetraTec BF Biological Filter Foam doubles as a media for removing finer particles of solid waste as well as providing a high surface area for bacterial activity. To operate the foams purely as a mechanical media for solid waste removal clean them under tap water as necessary. To maximise their biological activity clean them in a jug of aquarium water 3. TetraTec BB Bio Filter Balls are biological media that provide an excellent environment for friendly bacteria to break down ammonia into harmless nitrate. Because they are not too porous they allow a good flow of water through them which ensures that all the bacteria receive a supply of oxygen and nutrients. This keeps them working effectively and avoids ¿dead areas¿. Clean in a
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