Being able to clean (regenerate) Seachem Purigen and put it back into use is a major positive. They state that it can be regenerated up to 10 times.
How To Regenerate Seachem Purigen
How to Regenerate Purigen (7 Quick and Easy Steps) - Aquaria Passion
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SEACHEM Purigen Ultimate Filtration for Marine & Freshwater Aquariums, 10.6-oz jar
How to Regenerate / Clean Seachem Purigen
How to Regenerate Seachem Purigen REEF2REEF Saltwater and Reef Aquarium Forum
How to Regenerate / Clean Seachem Purigen
Seachem - Purigen
Purigen - 34 oz. - 1 L
How to Regenerate Seachem Purigen REEF2REEF Saltwater and Reef Aquarium Forum
Purigen didn't regenerate well
How To Recharge Seachem Purigen - Odin Aquatics
How to Regenerate / Clean Seachem Purigen