This Top Fin Aquarium Cartridge is quick, easy and disposable. This cartridge fits Top Fin Undergravel Filters, and helps remove pollutants and odors as well as water discoloration. Only at PetSmart.
Features: Helps remove pollutants and odors, Helps remove water discoloration
Includes: 2 disposable cartridges
Intended For: Top Fin Undergravel Filters