Power Cleanse CC is an extremely powerful, highly activated catalytic carbon containing huge numbers of mesopores and macropores, suited to direct adsorption of a wide range of organic pollutants in tap water, as well as marine, brackish and freshwater aquaria. It will significantly raise the ORP unlike standard carbon) and it will outperform any standard carbon because of its catalytic action. Unlike standard carbon, Power Cleanse CC will also remove toxic chloramine, ammonia and hydrogen sulfide from tap or aquarium water. Power Cleanse CC is powerful, you don't need much Reverse osmosis filter membranes can be damaged by chloramine or chlorine, and they don't remove chloramine for your aquarium. Standard carbon removes chlorine only, not chloramine and also converts much of the chloramine to toxic ammonia. Power Cleanse CC, when placed ahead of the membrane, will remove the ammonia chloramine as well as hydrogen sulfide to make the water safe for the membrane and your aquarium