Developed, but not hatching

[hudsonhens]

Today is day 22 and we have 15 eggs that have not hatched. We candelled them at day 15 and all of these had chicks developing in them. We started with 21 eggs, but 6 never developed, se we tossed them at day 15. But now the others are not doing anything, no peeping, no pipping, nothing. As far as I've seen temp has been regulated at 99.5. We've used this incubator before just a couple months ago and had a 55% hatch rate and they started hatching on day 20. Any idea what could be going on?

 

[Dogfish]

I had 1 hatch last night, and that was 22 days, and have 2 more yet to hatch. All my eggs were set the same day, and the first one pipped Tuesday, so there was a spread. I'd wait a few more days, just in case.

 

[oesdog]

my wee Blue hatched day 27 and Omlet day 28!!!!

stop lifting the eggs,make sure the humidity is right and wait!!!!!!!!

oesdog