Good salt, or does not really matter?

[Parker]

I had an issue with an online vendor some time ago and as resolution to the problem I was compensated with salt, 7 pails worth of Seachem. I can honesly say I will NEVER buy Seachem salt again once these pails are gone. My biggest problem, I have to heat the hell out of it to get it to completley disolve other wise is mixes up with a milky color and stays that way. I've let it mix for a week with no improvement. I have a maximod in ea 50 gallon mixing container and I also have a pump that pushes 900 gallons an hour, it should mix! lol