This is my first attempt at hatching and I have 28 turkey eggs in bator after first 24-30 hours temp evened out so I have convinced my self that I don't need to be there checking every 1-2 hours was attempting dry incubation rh in basement is in the low to mid 30's which is perfect but when bator came up to temp rh dropped to less than 10 so I added water and it came up to 30's again. When I checked air cells not on all but 5 from all over rack they seem small so I'm letting it dry for 2 days to see if they grow a bit by Thursday will add water tonight Thursday is day 15 hope I am thinking right on this. Could not see much on day 10 but eggs did seem a little darker inside than before start.