been using the brute for a while now Rob. this is the first time ive had issues... ok odly enough as this sounds:
i could have had ph and alk issues for much longer than i realize. since this last bucket of salt i gotten. its about 6-8months old. this actually peeked my interest on what the deal is since my last 30 gallon batch which was the second to last of what was left in the bucket,,, the bottom of it.
when i first started asking about Red Sea Pro Salt is the time frame i started noticing odd things overseen like very slow skelletal growth, then recently my starfish melting. checked ph because i thought it was the new rock i put in which yes, is man-made rock. i was pointing to it for a while and killed that theory of the culprit when i tested PH on my ro/di (7.0-7.1) and my last 2 batches of SW (7.8). then i began checking alkalinity after reading a ton of stuff on it finding that w/o alkalinity, calc can be sky high and still it wont be used up by the corals. there must be a ballance between the 2 and of course mag plays a roll as well, but i dont have a kit for it. I'm starting to dig so deep on this and get so overcomplicated i need to get back to the basics and stop reading about orp lol...