OK here's the link to calibrate thermometers:
http://cmfarm.us/ThermometerCalibration.html
If you scroll down there is a short video that explains how to do it. I just did this for my main thermometer and found it was off by 3.5 degrees. I'm figuring that is to blame for my poor hatch rates. Anyway, if you can get your temp reliable that is the most important thing.
Happy hatching!!!
http://cmfarm.us/ThermometerCalibration.html
If you scroll down there is a short video that explains how to do it. I just did this for my main thermometer and found it was off by 3.5 degrees. I'm figuring that is to blame for my poor hatch rates. Anyway, if you can get your temp reliable that is the most important thing.
Happy hatching!!!