Seachem Water filter Purigen

Ultimate filtration. Exceptional organic removal capacity. Helps control ammonia, nitrite and nitrate. Color changes as Purigen is depleted. Purigen is a high-quality synthetic adsorbent unlike any other filtration product. It is not a mixture of ion exchangers or low-capacity adsorbents, but a unique macroporous synthetic polymer that removes soluble and insoluble impurities from water at a rate and capacity that exceeds tous autres competing products by over 500%. Purigen controls ammonia, nitrites and nitrates by removing the nitrogenous organic waste products that would otherwise release these harmful compounds.