Originally Posted by sin574
what would happen if the temp go up to high. my temp on my 6 gallon nano right now is 88.2
OMG....88 is wayyy too high. You will first start to stress things (fish and corals) the fish will then die (hopefully not), and the corals will bleach and die. You need to try to get it down to at least 84. The highest my tank have been was about 84, then I started to worry as it went up to 85. Try directing a fan on top of the water, it will cool it very fast. Maybe buy a small computer fan and fix it on to your canopy. It will definetly drop at least 3 to 4 degress in no time.