High-performance coal-based activated carbon as pellets. Steam activated. Surface: 950 m²/g Iodine value: > 900 mg/g. Carbon premium activated-carbon pellets detoxify the water in aquaria, preventing yellow casts, removing enduring organic pollutants, binding residues of medication and algicides and decomposing protein compounds. In salt water, the coral's toxins or urticant toxins are adsorbed.