Askoll Ac350004 Replacement Filter Materials for Pure Aquariums, S

Package contents: 1 x filter sponge for mechanical/biological filtration 1 x Activated Carbon Cartridge for Chemical Filtration 1 x nitrate and phosphate mix for chemical filtration This and a monthly maintenance kit is suitable for pure and easy to assemble aquarium and provides a rotating filter system, 4.8 grams of coal and 11 ml mix.