Seachem Purigen 250g
Purigen is a premium synthetic polymer that is unlike any other filtration product. It is not a mixture of ion exchangers or absorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water at a rate and caoacity that exceeds all other by over 500%. Purigen controls ammonia, nitrites and nitrates by removing nitrogenous organic waste that would otherwise release these harmful compounds. Purigen's impact on trace elements is minimal. It significantly raises redox. It polishes water to unparalleled clarity. Purigen darkens progressively as it exhausts, and is easily renewed by treating with bleach. Purigen is designed for both marine and freshwater use.
Rinse before use. Use in a fine mesh (180 micro or less) filter bag such as Seachem's The Bag. Each 500ml treats up to 2,000L for up to six months.
Exhaustion is indicated by a pronounced discoloration of the beads to dark brown or black.
Soak in a 1:1 bleach:water solution for 24 hours in a non-metallic container in a well ventilated area and away from children. Rinse well, then soack for 8 hours with a solution containing 2 tablespoons of Prime, or equivalent dechlorinator per cup of water. Rinse well. Full activity should now be restored and Purigen is ready for reuse. Caution: Some slime coat products may permanently foul Purigen and render regneration difficult. Do not reuse if odor of chlorine is detectable. In case of doubt, soak beads in small quantity of water and test for residual chlorine with a chlorine test kit.
250ml treats 1,000L