I checked their website, nothing really there, just marketing stuff mostly. I came across a YouTube video though (sorry there is no link, I'm on my phone and can't to get one for some reason). If you YouTube red sea coral pro salt you'll find it.
They basically day that if the water is mixed to long at to high of a temp the water will turn cloudy from calc and kh
bonding and precipitating out of the water. (I think that's what they said)
They go on to say that if it does precipitate it's still ok because it's only like a 2% change in levels or something.
I do notice build up on my heater and pump after mixing all night but I always blamed my salt (salinity, Aquavitro).