I have incubators one is a plain ol hovabator. The other is a smal mini frige. I got the mini because I knew I was going to outgrow the hovabator this year. I set it up 2 weeks ago and got temps stabilized to move my eggs. I sat for 4 days at 83 with no problems now I move over the eggs and let things settle down and it won't go over 78-9 degrees. So igive it a small bump maybe an 1/32 of a turn on my rheostat. I did that last nite today I check it and everything seems to be ok at 82.5 no problems....I come home tonite and the @#$&*^%#$$!!! thing is at 88! Uggghhh! I opend the door to cool it down and turned down the stat but now I'm worried I screwed my eggs. Does a bump in temp have to be over a long period of time or will a partial bump for a day do me in?