I woke up this morning and 4 of 5 of my fish were dead. I have had no problems and all of my parameters were fine. The temp in my tank was 78. Any ideas as to why? 2 of the fish I had since I started my tank. Tank has been running since February 13. Fish lost were: Yellow Tang, Blue Damsel, Strawberry Basslet and a Cinnamon Clown. Surviving was the Lawnmower Blenny. My Inverts are also still alive along w/ the Peppermint Shrimp and a Turbo Snail.