A very dear friend let me use her incubator for the next several weeks.
In just a few short weeks we will hopefully have a dozen healthy guinea keets and 39 baby chicks...if they all hatch. We've been diligently watching the water level so that the humidity in the incubator is just right, as well as the temperature. The temperature must remain between 99.5 to 100 degrees. The only time it dropped below 99.5 was while we were adding the chicken eggs.
The guineas take around 28 days to hatch and the chickens about 21 days, so we had to stagger when we added the chick eggs so that they would all basically be hatching within the same day or two.