http://www.seachem.com/support/FAQs/CupriSorb.html
Q: I lost the instructions describing how to regenerate CupriSorb™, could you tell me how to do it?
A: When exhausted, CupriSorb™ may be discarded or regenerated. Regenerate by soaking bag or beads in a non-metal container with 2 cups of...