Marina Slim Filter Carbon Plus Ceramic Cartridge 1.5" length x 3

Ideal for tropical fish the Marina Slim Filter Carbon Plus Ceramic Cartridge combines activated carbon and Ceramitek in one cartridge for a healthy aquarium. The Marina Slim Filter Carbon Plus Ceramic Cartridge contains activated carbon effectively removing pollutants and odors, while the Ceramitek, a highly porous ceramic biological filter medium optimizes biological filtration. The Marina Slim Filter Carbon Plus Ceramic Cartridge is easy to replace and fits all Marina Slim Power Filters. The Marina Slim Filter Carbon Plus Ceramic Cartridge should be replaced every two weeks, your should never replace all filter cartridges at the same time in order to ensure constant presence of beneficial bacteria.