I decided to give a try at a home made bator. I have styrofoam cooler with a pc fan 60 watt bulp and a water heater thermostat. The bulb will get up to temp very quickly but then the thermostat turns off and does not turn on again until the temp is almost 10 degrees cooler. The thermostat is right beside the bulb. I do not know if that is correct or not. Any one have this issue? What did you do? What has worked for you? I have eggs coming next week and need another bator. Any help would be greatly appreciated. Thanks so much