ARGH!!! I just noticed the temp on my tank is ten degrees higher than normal. I usually keep my tank at 75, but I just went to clean it and it felt like bath water. So far, my fish seem to be ok, but some of my corals look sad. I'm not sure how long it's been like this. It was fine on Wednesday, but I didn't pay attention to the tank on Thursday or Friday. I took the heater out and have a replacement on hand. Do you think I should let the temp drop back down to it's normal 75, or should I bring it down a few degrees each day? With all the money and time I have invested, I really need to get me a controller. I hope I didn't realize that too late.:blue: