A copy and paste from the other thread for those that might only read this one...
Crystal Sea isn't my favorite mix, and for reasons that no one ever has understood, when Ron Shimek said folks should switch to it a few years ago, a number of folks switched to it and had troubles. More than expected who switched from IO had a problem, and in some cases severe problems. Folks using it long term were fine.
Normally it makes not a whit of difference when changing salt mixes, but at least then it did, and if I were contemplating making the same switch, I'd be sure I wanted to, and then do it quite slowly.
Personally, I'd just avoid this mix. It seems to have unexplained organic matter in it, for example.