How do i prevent this from happening to the other corals in this 75 g tank? I posted a pic of parameters and some of the corals. I had high phosphates but now it has been maintained. A green chromis, anemone, and a turbo snail had skunked and died in this about a month and a half ago and i had no change in parameters shortly after. Could the aftermath of those dying in my tank be taking effect now? I have done 30% water changes 3 times since then.