SuperFish Aqua-Flow 200/300 Easy Click Aquarium Filter Cartridge (1pk)\nKeep your aquarium ecosystem in peak condition with these genuine SuperFish Aqua-Flow 200/300 Easy Click Filter Cartridges. Designed exclusively for the Aqua-Flow 200 and 300 Aquarium Filters the specially engineered SuperFish triple-action filter cartridges combine open-structured foam and activated carbon to deliver effective mechanical, biological and chemical filtration. The innovative SuperFish Easy-Click quick-release system streamlines aquarium maintenance, letting you swap Aqua-Flow Filter Cartridges in moments rather than minutes. Recommended for monthly replacement, this single Filter Cartridge will maintain peak filter performance for 1 month, delivering optimal water clarity and chemical balance in your aquarium.\n\nSuperFish Aqua-Flow 200/300 Easy Click Aquarium Filter Cartridge (1pk)\n\nKeep your aquarium ecosystem in peak condition with these genuine SuperFish Aqua-Flow 200/300 Easy Click Filter Cay