maybe or maybe not. the coral frenzy has large particles/chunks in it. The reef roids is a very fine powder. not sure the difference in ingredients but nothing else changed in my tank. definitely not over feeding based on what i read here(reef2reef) and my coral supplier. maybe underfeeding if anything. I will say the corals all react more positively to the reef roids.I would be quite surprised if coral frenzy was responsible for the dying. over feeding maybe?
just facts from my tank and stock.

