CerMedia MarinePure 1.5-Inch Sphere Bio-Filter Media for Marine and Freshwater Aquariums 1-Gallon

Ceramic Bio-Filter Media with Vast Surface Area Open-Flow Porosity. For ammonia nitrite removal in fresh marine aquariums. One MarinePure Sphere has the same surface area as 1350 plastic bio-balls. Use in wet dry filters sumps or canister filters.

• Ceramic Bio-filter Media with Vast Surface Area AND Open-Flow Porosity
• Ammonia and Nitrite Removal
• Nitrate Reduction
• Inert Ceramic
• For SaltWater and FreshWater Aquariums