I spoke with a chemist yesterday
about the MCHM. He said the key to complete removal was carbon. As long as fresh carbon was used, the chemical is gone. For the record, he works for CAMC and not the water company or our crooked governor. Lol.
He said our use of RODI on the tanks is perfect. I've done numerous water changes and haven't had a single coral melt or fish die..
We're still not using our water. Only because my children are aged 6, 4, and 3. Not worth the guessing should an illness happen later on. Maybe towards this summer we'll trust the water supply. We were thinking of sending samples of our water out for independent testing, but the coat is pretty prohibitive. Sigh.