Marina Bio-Carb Slim Filter Cartridge HealthConsideration_Bone Development Read specific gravity on inside

Read specific gravity on inside scale and salinity in parts per thousand (PPT) on the outside scale

Replace every 6 months

or for installations where external filtration is not possible

Promotes better health

Simply put

Marina Bio-Carb Slim Filter Cartridge HealthConsideration_Bone Development Read specific gravity on insideThe Marina Slim Filter Carbon Plus Ceramic Cartridge combines activated carbon and Ceramitek in one cartridge for a healthy aquarium. The activated carbon effectively removes pollutants and odors, while the Ceramitek, a highly porous ceramic biological filter medium optimizes biological filtration. The easy to use disposable cartridge should be replaced every two weeks. Make sure to never replace all filter cartridges at the same time in order to