Juwel Carbax is a highly effective granulated active charcoal. Ist excellent absorption properties enduringly and quickly bind discolorations, odours and toxic substances and ensure crystal-clear aquarium water. Juwel Carbax filter medium sets new standards in aquarium filtering with active charcoal. Juwel Carbax is a highly effective, hard coal based granulated active charcoal that has been specifically developed for cleaning and decolourisation of water-based liquids. In contrast to conventional charcoal filter media, with Juwel Carbax, the entire active charcoal grain is completely activated and not just the grain surface. Therefore, Juwel Carbax binds discolorations, odours and toxic substances particularly enduringly and quickly and ensures crystal-clear water in your aquarium. Juwel Carbax comes with filter sock in filter media container. Juwel Carbax is available for your Juwel filter system:Carbax M suitable for: Compact, Compact H, Compact Super, Bioflow Super, Bioflow 3.0Carb