Ya'll are funny! I use a LG incubator without fan or turners. I hand turn all my eggs three times a day. We use wood heat so its never a steady temp in the house. My LG's temps fluctuate like mad. Usually running between 100.0 and 100.5 during the day and 98.6 to 99.5 during the night. I have great hatches everytime. Don't worry so much about the temps unless of course you have turners in. In my experience they hold them closer to the heating element and you don't want the bator getting too hot. I had my bator get 109 degrees for a couple hours my first eggs I set this year while I was gone. I freaked out!! I waited for two days and they were all still growing so I left them. They all hatched at day 19 and 20 but all were completely mature and did well. I lost two because their heads were in the small end of the shell but they were full-grown. I just sold all but three of those chicks today
So, don't sweat the temps too bad, these chickies are super resilient

