If you’re looking for a good, rechargeable chemical magnet for your tank, consider using Seachem’s Purigen. Here’s what it is: According to the manufacturer, it’s a premium synthetic adsorbent (yes, this is spelled correctly) unlike any other filtration product. Not a mixture of ion exchangers or adsorbents, Purigen is a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water at a rate and capacity that exceeds all others 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.
Sizes: 100 mL 250 mL, 500 mL, 1 L, 2 L, 4 L, 20 L
Why Seachem Purigen Is Different
Selectivity: Purigen® is the highest capacity organic filtration resin on the market. No other products can compare to its ability to clear haziness and polish water to unparalleled clarity. Unlike other products on the market which are simple ion-exchange resins, Seachem Purigen® is specifically designed to be an organic scavenging resin. When ion-exchange resins are filled to capacity by metals and other contaminants, Seachem Purigen® has barely begun to reach its potential. Purigen® generally ignores simple elemental compounds, having an extreme affinity for nitrogenous organics. The primary source of nitrogenous compounds in an aquarium is waste. Fish, corals, even plants produce nitrogenous waste. Seachem Purigen® removes that waste faster and more completely than anything else on the market.
Seachem Purigen Has Increased Capacity
Seachem Purigen’s™ possesses enhanced capacity owing to its vast surface area. All other resins on the market are purely spherical extruded beads. These beads remain smooth even under a microscope. Purigen® is both spherical and macroreticular. It has microscopic pores that increase its usable surface area to many times that of a purely spherical resin.
Seachem Purigen Can Also Be Regenerated
As it absorbs waste products, Seachem Purigen® 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. The bleach will literally “burn off” the organics that have been removed from the tank. (Seachem advises tank enthusiasts to beware products that claim to be regenerated with brine solutions, which is the regeneration procedure for ion-exchange purposes. Brine solutions will not remove organics. While such resins have a limited capacity for organic adsorption, the brine regeneration process only replaces removed ionic compounds. It does not destroy large organic molecules that were removed, which is the primary function of organic adsorption resins.)
How To Use Seachem Purigen
Rinse before use. Use in a fine mesh filter bag. Each 1 L treats up to 4,000 L (1,000 gallons) for up to six months. Exhaustion is indicated by a pronounced discoloration of the beads to dark brown or black.
How to Regenerate Seachem Purigen: 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 soak for 8 hours with a solution containing 2 tablespoons of ChlorGuard™, Prime®, or equivalent dechlorinator per cup of water. Rinse well. Original color and full activity should now be restored and Purigen® is ready for reuse. Caution, some slime coat products may permanently foul Purigen® and render regeneration 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.