Seachem Purigen Ultimate Filtration Powder

by Seachem

Selected Option: 8.5 oz
$27.99 (You Save 46%)
Free Shipping Over $75
In Stock
Selected Option: 8.5 oz

Key Features

  • Removes soluble and insoluble impurities from water
  • Controls ammonia, nitrites, nitrates
  • Polishes water to unparalleled clarity
  • 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, Purigen is specifically designed to be an organic scavenging resin. When ion-exchange resins are filled to capacity by metals and other contaminants, 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. Purigen removes that waste faster and more completely than anything else on the market.
  • Capacity: Purigens 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.
  • Regeneration: Purigen can also be regenerated. As it adsorbs waste products, 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. Watch out for products that claim to be regenerable with a brine solution. That is the regeneration procedure for ion-exchange purposes. A brine solution will not remove organics. While such resins have a limited capacity for organic adsorption, a 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.
  • Seachem Purigen controls ammonia, nitrites and nitrates
  • Seachem Purigen 100 mL - (Treats 400 L (105 US Gallons)
  • Can be regenerated for reuse by soaking in a water and bleach solution for 24 hours


Seachem Purigen Ultimate Filtration Powder 8.5 oz

Seachem Purigen Ultimate Filtration is a premium synthetic adsorbent that, unlike any other filtration product, is not a mixture of ion exchangers or adsorbents, but 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. Purigens 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.

Why It's Different:


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.

Regeneration: Soak in a 1:1 bleach:water solution for 24 hours in a non-metalic 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.


100 ml (Media Bag): Treats 106 Gallons

250 ml: Treats 265 Gallons

500 ml: Treats 530 Gallons

1 Liter: Treats 1,060 Gallons

2 Liters: Treats 2,120 Gallons


Brand Seachem
UPC 000116016605
SKU 166
Item Number L1699090911P16990
Size 8.5 oz
Weight 0.7 lbs.
Pkg Dimensions 7.25" (L) x 5.75" (W) x 1.25" (H)

Customer Reviews

   5.0 out of 5
5 star
4 star
3 star
2 star
1 star

Add a Review

Your rating:  
Your email will NOT be published or displayed.

Reviewed by Jack P. on May 2, 2021

Best media you can get for your aquarium!

Reviewed by Christina P. on Mar 9, 2021

Works wonderfully

Reviewed by Dale D. on Feb 15, 2021

Unparalleled Clarity!

Reviewed by Beverly R. on Jan 1, 2021

No doubt. No argument.

Reviewed by Victor S. on Dec 15, 2020

This product SAVED 15 LIVES!!!!!!!!!!!!!!!!!!!!!! (works fast!)

Add a Review

Your rating:  
Your email will NOT be published or displayed.

Join the Critter Club and get exclusive access to coupons and special offers just for club members!

Plus get a $5 off coupon code you can use today!

CritterWarehouse.com Email List Signup
We'll never share your email address with any third-parties.