Also, anyone have an idea of how to check humidity other than a hygrometer? (I think that's the right -meter) I'm kinda worried it may be too dry in my room as I'm downstairs& have gas heat. Sometimes when I wake up my lips will be almost dried together!! I have a humidifier tho& it will be on 24/7 starting tomorrow until day 24 or so. (Just in case there r some late hatchers) they'll also be in my closet as the temp stays pretty constant there.
My eggs get weighed every week. They should lose approximately 5% of their original weight each of the first two weeks. That is about 3 grams for the average size chicken egg each week. If your eggs are losing too much weight you need to increase the humidity. If they are not losing enough, you need to reduce the humidity. The eggs should lose 13% of their weight by lockdown.