Marina i110 / i160 Internal Filter Refill Cartridge 2 pk

The Marina i110 / i160 Replacement Power Cartridge is made specifically to fit inside the Marina i110 and i160 internal filters. The outside of the power cartridge features polyester foam to trap fine particles; while the inside chambers contain carbon to remove pollutants and odors; and zeolite to eliminate toxic ammonia for a cleaner, healthier aquarium environment and crystal clear water. For best results replace every 4 weeks.