Chemical Filtration Premium Activated Carbon Bags

MarinelandChemical Filtration Premium Activated Carbon Bags fit all C-Seriesand MagniflowCanister Filters. Remove more discoloration, odors and impurities from your aquarium with these carbon bags. For best results, change carbon every three weeks. Each bag contains Black Diamond Premium Activated Carbon inside. This pack contains 2 bags. Keep your aquarium water clean and clear with proper filtration.