Marina Bio-Carb Cartridges for Slim Filters – 3 pk

Marina Bio-Carb Cartridges for Slim Filters are genuine replacement carbon/ceramitek cartridges designed for use in Marina Slim Filter Models S10, S15, and S20. Each Bio-Carb filter cartridge contains Ceramitek as well as activated carbon. Combined, they deliver effective biological and chemical filtration, removing odors and pollutants while providing a porous medium for beneficial bacteria to thrive. For best results, it is recommended that your Bio-Carb disposable cartridge be replaced every two to three weeks.