Marina BioCarb Filter Cartridge for the Marina S10 S15 and S20 Filters

For crystal clear and water. Carbon removes pollutants and odours normal media cannot remove. For best results change reguarly

Bio-Carb, a mix of Carbon and Ceramitek effectively removes toxins and increases biological filtration. It is very important to replace every few weeks to ensure that the carbon is actively adsorbing all the impurities so that your aquarium water remains crystal clear. 3 per pack

It is important not to change all cartridges at the same time to ensure proper biological filtration, by alternating cartridge replacement, the Bio-Guard system ensures rapid cartridge seeding of beneficial bacteria, ensuring proper biological filtration for a clean and healthy aquarium.