I'm trying to figure out what to do with my duck eggs. I've had 2 failed batches of duck eggs, the last batch were peeping a few days ago and didn't pip, didn't hatch. So incredibly heartbreaking and sad, especially after listening to them peeping. I think i had my humidity way too high (around 65%) and in hindsight, when i candled right before lockdown, and saw the beaks in the air sac, the air sacs were way smaller than they should have been. I've been staggering batches of eggs in a hovabator with turner and fan, then moving to a still air hovabator for lockdown. I just started 13 duck eggs and 14 chicken eggs the other day and have 14 duck eggs that are on day 15 now. I'm in troubleshooting mode because i don't want to lose any more ducks. Right now i have the humidity at 45% in the incubator. The eggs that have been setting at 65% for 2 weeks i candled today, and traced the air cell. According to this diagram the air sac in all 14 duck eggs looks a lot more like the day 7 reading, so it's about half the size it should be.
I think i should probably just take all the water out of the tray and reasses in another week. Anything else i should consider? What humidity level should i be aiming for to correct the tiny air sacs? I really don't want to mess up all the eggs that i just put in there either!! I was also thinking that i should read up on dry incubating, are there any good resources that you would recommend? I live in the pnw and it's usually pretty wet and humid here in the first place, except in high summer.