Seachem Purigen Organic Filtration Resin – 250 mL | Crystal-Clear Aquarium Water

Achieve crystal-clear aquarium water with Seachem Purigen — one of the most powerful and efficient organic filtration resins available for freshwater and saltwater tanks. Unlike standard ion exchangers or carbon, Purigen is a unique macro-porous synthetic polymer that removes both soluble and insoluble impurities at an exceptional rate, targeting the nitrogenous waste produced by fish, corals, and plants before it can cloud your water or stress your livestock.

As Purigen works, it gradually darkens from cream to dark brown — a built-in indicator that tells you exactly when it’s time to regenerate. And unlike disposable filter media, Purigen can be fully regenerated with a bleach-and-water solution and reused, making it a cost-effective long-term investment for your filtration system.

Why Serious Aquarists Choose Seachem Purigen:

• Removes soluble & insoluble impurities — targets nitrogenous waste from fish, corals & plants
• Macro-porous design — microscopic pores maximize usable surface area for superior filtration capacity
• Color-change indicator — darkens from cream to brown as it becomes exhausted, so you always know when to act
• Fully regenerable — restore with a bleach-and-water solution and reuse; no need to replace after every cycle
• Works in freshwater & saltwater — suitable for fish tanks, reef tanks, and ponds

Safety Note: Avoid use with slime coat products, as these may permanently foul Purigen. After regeneration, ensure no bleach/chlorine odor remains before returning to the tank. Test with a chlorine test kit if in doubt.

Contents: 250 mL Seachem Purigen in mesh bag.