Fluval Zeo-Carb Media consists of a premium blend of research grade Fluval Carbon and Fluval Ammonia Remover. Working together, these highly effective filter medias eliminate liquefied impurities, odours and discoloration, while simultaneously removing toxic ammonia, for a clean, healthy aquarium. The clever combination of these two products into one frees up precious space inside the filter for other types of valuable filter media. This is genuine Replacement Zeo Carb Media for use in the full range of Fluval External Filters including the Fluval 105, 106, 107, 205, 206, 207, 305, 306, 307, 405, 406, 407 Canister Filters and the high performance Fluval FX2, FX4, FX5 and FX6. Genuine Fluval filter media Chemical filter media Premium blend of research grade Fluval Carbon and Fluval Ammonia Remover Highly effective at eliminating liquefied impurities, odours and discoloration Removes toxic ammonia Creates clean, healthy aquariums Available in 2 sizes; 450g & 1200g