The nail was hit on the head several times.......Just a bunch of hype or misinformation on some peoples part......Nothing wrong with IO....Every salt brand goes through this and certain brands will do better on different systems than others........Alot of the problems could just be attributed to quality control.....It's not unheard of a bad batch of salt mix.......Oceanic went through a similar situation a while back, and there are people that love the salt and tanks do very well on it.....I think this topic is a preference.......Reef Crystals here, never had any issues with it dissolving or cloudy......Seachem on the other hand....you'd buy a bucket and hard as a rock and wouldn't dissolve and you'd buy another and was great, but still hard to dissolve IMO, went back to Reef Crystals, and have been trying the Tropic Marin Pro with nothing, but good results......