I have 3 different thermometers in my incubator and they all read a different temp. 1 hygrometer reading 98.8, one home digital hermometer read 99 (doesn't do decimals) and a glass old style one reading just over 100. Last year I used only the glass one (assumed it would be the most accurate) and had very poor hatch rate. Not sure that is way, but thought I would mention. 2 years ago, used the hygrometer only and had 100% hatch, but the incubator was brand new. So, what temp do I trust? I am incubating turkey eggs, but as I understand it, the temp should still be 99.3-99.6 Thanks!