Good luck, Ive read the thread from the beginning just now..... Im so sorry you are having this much trouble! It sounds like serious poisoning of some sort to me. Possibly heavy metal since the fish can survive? For all 20 or so nems to die in the same day, and for inverts and corals to die in hours... Sheesh, its gotta be a super bummer for you! I really hope you find a solution for the problem.We all know this hobby can be frustrating at times, but it sounds like you are getting a bunch of frustration at one time. Hopefully the Triton test will shed some light for you!