I rigged a fan in my still air LG the other night. I had the incubator set up and to temp before I turned the fan on. Guess what the temp on after the fan was on??? 93.5!!! So that shows that the very bottom of the inbubator was at 90* or below and the top was at 100*. If you can, put a fan in your still air. It is SUPER easy (trust me, if I can do it, anyone can). You will get a much more even temp and therefore a better hatch rate.