What is happening to my duck eggs? (Long post)

[Jinglebells0518]

Now to humidity. Whereabouts are you located? I know the manufacturers recommend 40-50% humidity, but usually that’s too high for most of us. Check out the Red link in my signature line for more on humidity settings.
We will get you dialed in. Hang in there and keep trying!

The temperature is being taken at ground level so base of the egg.

Humidity is as low as I can get it. I haven't put any water in the incubator at all. I'm in NC and it's been very hot and humid for weeks. Too late in the season I think to start new eggs because it will be getting colder by the time they hatch especially with this one still being at day 18 and I only have one incubator. But after this I'm moving and my family won't incubate. ducklings haven't survived in the wild for years around here. The only ones on this lake basically are the 10 we raised and released. 12 years ago when we raised some there were 30+ wild ones.

Hopefully this last living one makes it. I feel terrible I killed 10 ducklings but if I didn't, the fox would have