On day 18 of incubating 24 eggs, 20 of which were pretty sure to hatch, I put a washcloth under them when I put them on the screen from the egg turner. My (brand new) hygrometer said the humidity was fine, but the washcloths did get dry. My hygrometer has worked fine to get the babies at least to day 15 - I saw movement when I candled them then. What have I done!!!!? It's day 22 now and no pips or peeps. I took the cloth out in hopes of saving them.