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I actually got instructions with my Purigen pack to use non iodized salt. That’s how I knew to use it. Thank you for pointing out the plants. I added to above.
Oh, goodness. (Sigh). I can only tell you what instructions were when I got mine. Probably several years ago. It worked though and makes perfect sense that it would since salt is a disinfectant. However, to make you happy, I will revise the post.According to Seachem: Seachem Purigen
Regeneration
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. Use regular 8.25% hypochlorite household bleach (non-scented, no dyes, do not use a splash-less bleach). Rinse well, then soak for 8 hours with a solution containing 4 tablespoons of Prime®, or equivalent dechlorinator per cup of water. Rinse well. For freshwater use, soak for 4 hours with a solution containing 2 tablespoons of buffer per cup of water (Discus Buffer®, Neutral Regulator®). 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 bleach/chlorine is detectable. In case of doubt, soak beads in small quantity of water and test for residual chlorine with a chlorine test kit.