Seachem Purigen is a premium synthetic absorbent that removes organic waste, toxins, and impurities to polish aquarium water to extreme clarity, treating up to 100 gallons per 100 mL.
- Optimal Mesh Size: 180 microns is recommended to contain the small, granular resin.
- Placement: Place in a high-flow area of a canister filter, media chamber, or hang-on-back filter.
- Lifespan & Regeneration: Purigen turns from off-white to dark brown/black as it fills with waste, usually lasting 4–6 months before needing regeneration in a 1:1 bleach/water solution.
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