· Today I came from school and find everything weird, my corals and my fish were acting weird, so as fast as i could i tested the water and for my surprise everything was normal except my TEMPERATURE . all the fishes were stressed, but my 3 years old yellow tang was specially stressed, so i put him in qt, but for my bad luck I let the thermostater on:evil: , and when I came back I found the yellow tang dead and the water was at 39ºC