I'm hoping there was a typo up there, cause your temp should be aroung 99.5. I put mine on 100. If you had them at 55 there is no way they're going to hatch, and I highly doubt they got to the point of breaking through the airsac. Do you have them in a garage or cold room? In order to have a temp of 55 they wouldn't be in the house because even a human couldn't stand 55 in the house. And as far as your humidity I'm a little confused. I use percentage and keep them at about 40percent the first 18 days then raise it to 60percent.