I never, in 6 years, had a problem with io disloving or anything. But my tank was never cloudy, nor was the water I was mixing (and with IO I never let it sit, that's something new I'm doing). I never had a problem with IO untill the bad bag. But they ticked me off, if they had sent me 50gl bag of salt (which I what I sent them), then I might not be as mad, but they've never called back as the guy told me he would, and he only sent 20gl when I sent him close to 50gl (and he told me he was going to send me a 50gl bag). The Oceanic I'm using, is brand new, I had this problem with the first bit, but my water isn't cloudy.
However, no matter what salt you use, treat it as you would for anything else you add to your tank, test it first. Each new bag/box/bucket.