Marineland Black Diamond Premium Activated Carbon removes discoloration odors and impurities for sparkling clean aquarium water. Composed of heat-activated bituminous coal-based carbon this media is ideal for chemical filtration in all aquarium filters. Black Diamond Premium Activated Carbon granules are specially sized and far more efficient than coconut wood or peat-based carbons. Ideal for use in all aquarium filters. Clean sparkling water is the mark of a healthy thriving aquarium. The amount of filtration needed to maintain an aquarium depends on a number of variables. These include tank size individual maintenance habits and fish population. Whatever your individual needs Marineland brand has the filtration products you need to deliver on-target advanced filtration. Marineland® brand is the world’s leading brand of innovative equipment and environments for consumers wishing to create the ultimate aquatic showcase. Committed to fishkeeping success for over 40 years the brand is the professional’s choice for commercial display systems and scientific research. Whatever you’re passionate about – freshwater or saltwater big or small beauty or science – make your aquarium your own. Marineland®