CerMedia MarinePure Block Bio-Filter Media for Marine and Freshwater Aquariums, 8 by 8 by 4-Inch
Brand: CerMedia MarinePure
Color: white to off white
Ceramic Bio-filter Media with Vast Surface Area AND Open-Flow Porosity
Nitrate Reduction
Ammonia and Nitrate Removal
Lighter and more effective than Live Rock
Inert Ceramic