Well that is a good idea- Lordy w/all this humidity & temp prob. it's a wonder we ever get anything to hatch!YOu know i have had worse than i should hatches lately and late hatches
My Genesis's temp was off !!
Bottom of the thing was only 95.5 .!The bator reading said 99.5 and set at 100 so cant trust any of them i guess.
I have raised it to 99 now but had to set it at 102 to do it.
I have been told by more tha one person to check them every time and you need a FEW good therms to do that so you know the temp is right.Makre sure you check that new one against another that works well so you i know it is working also there is a way you can test it somethign about putting it in ice until it gets to zero which it should
Ask Brookhaven she knows how to do that. I forget exactly .She is smart puts 4 therms in the bottom of her bator (glass bulb scientific ) so the reading should all be the same.