Fluval View Carbon+Zeolite Cartridges - 24 Total (6 Packs with 4 per Pack) 24 Total Cartridges (6 Packs with 4 Cartridges per Pack) Fluval View Aquarium Replacement Filter Cartridges With carbon and zeolite for clean and clear water Removes pollutants and odors For use with the Fluval View Aquarium