- Replacement filter cartridges with a combination of carbon and zeolite
- Chemical filter media removes pollutants and odors from aquarium water
- Improves color and clarity of water and provides a healthy environment for your fish
- Designed for use with all Marina 1 Gal. (3.7 L) aquariums including the Marina Pirate Aquarium Kit (13310) and Marina Mermaid Aquarium Kit (13311)
- Includes 3 replacement filter cartridges