It is macro- porous alkalescence synthetic polymer which could adsorb larger size soluble and insoluble impurities. And it has high capacity of organic filtration and antioxidant. Also it could discoloration the water to be clear. It removes soluble and insoluble impurities from water. Organic Remover controls ammonia, nitrites also reduces nitrates by removing nitrogenous organic waste that would otherwise release the harmful compounds. It can also be regenerated. As it adsorbs waste products,It will change color from a pale blonde to a dark brown, almost black. Once it is exhausted, it can be regenerated with a solution of bleach and water. Rinse before use. Use in a mesh bag.