Looks to me like underwatering and overfeeding. Is watering twice a day ok for coco or rockwool? Not being a hydro guy, I'm not sure.

Did someone recommend these products as a good nutrient system, or did you just go online and throw-together stuff that looked cool? (serious question) Advanced Nutrients is great at marketing, but don't fall for all their self-hype. Their shit isn't any better than other, cheaper brands.

Hey guys...do this guy a favor, and look-up the ingredients of his nutrients and additives before offering advise. 4 out of the 4 products he uses has plenty of magnesium. (too much)
Heck...Connoisseur A is a fake CalMag product.