Marina Slim Power Filter Bio Carb Replacement Carbon Cartridge

Slim Filter Bio-Carb Replacement Carbon Cartridges Whether youre a beginner fish hobbyist or have kept an aquarium for many years now, youll find Marina products to be user-friendly and affordable, supporting the life and habitat of your fish for years to come. If you own a Marina Slim Filter, these replacement carbon cartridges will keep your filter running efficiently and keep your aquariums water clean and clear. Made with activated carbon and ceramic, these filter cartridges provide optimum biological filtration for your tank.