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I have a couple of BIG Marco rocks that I have to cure. Can I use the same 55 gallon drum that I store my ro/di water in to cure the rocks, than reuse it to store ro/di water again. Will the container hold any residue from the curing process?
I don't see a problem with it, as long as you rinse it out well. Maybe fill it with water and a few cups of bleach...and scrub it all out...then make sure to let it dry completely.