Askoll Ac350004 Replacement Filter Materials for Pure Aquariums, S

Kit contents: 1 x mechanical/biological filtration sponge, 1 x activated carbon cartridge for chemical filtration, 1 x anti-nitrate and phosphate mix cartridge for chemical filtration This and a monthly maintenance kit suitable for Pure S Aquariums and easy to assemble ensures a rotary filtration system, 4, 8 grams of carbon and 11 ml mixing