The Marina i25 Replacement Power Cartridge is made specifically to fit inside the Marina i25 internal filter. 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.
For more fish tank accessories check out the other Marina products including aquarium filters, filter media, aquarium heaters, aquarium air pumps, aquarium lights, aquarium decorations, aquarium gravel, aquarium rocks, aquarium thermometers, and aquarium stands. Marina has a wide variety of products that are perfect for your pet fish or betta fish to enjoy in any large fish tank, small fish tank or in a freshwater tank.