Black Magic Super Activated Carbon is a highly active, coal-based carbon used in research laboratories and universities. The patented activation process used in its production yields a high purity, premium grade carbon with optimal pore structure and a large surface area for maximal adsorption. Its unique design provides fast, continuous and more thorough removal of odors, colors, organic pollutants, toxic compounds and medications. The result is a cleaner, healthier aquarium environment. Ideal for freshwater, marine and reef aquariums containing sensitive fish, plants and invertebrates.