What causes chicks to give up between day 18 and hatch??
FYI
Incubation conditions day 1-18: 99.5 degrees +/- 0.2, Humidity 44% +/- 2% only auto turner.
Hatching conditions day 18-21+ 99.5 degrees +/- 0.3, humidity 64% +/- 3%.
I have 2 digital thermometers in each, the incubator and hatcher...