Marina Bio Clear Cartridge for Slim Filters - 12-3 packs (36 total) ~ Replacement Filter Media Pond Kits this compressed brick will expand

this compressed brick will expand to make a whopping 7-8 litres of substrate

8 fun stimulating designs:

Made with 100% bird safe materials

all of the debris is collected in a single skimming cup for simple

Marina Bio Clear Cartridge for Slim Filters - 12-3 packs (36 total) ~ Replacement Filter Media Pond Kits this compressed brick will expandMarina Slim Filter Bio Clear is a genuine replacement cartridge for all three Marina Slim Filter Models (S10, S15, S20). Ideal for tropical fish, the filter cartridge contains activated carbon and Ceramitek for optimum filtration and a healthy aquarium. The activated carbon effectively removes pollutants and odours, while the Ceramitek, a highly porous ceramic biological filter medium, optimizes biological filtration. The easy to use disposable