Good point.Only one thing more, you should know that the evaporating pace is dependent on the s/v of the eggs! Big eggs have little s/v so they less evaporating than small eggs that have a big s/v, in the same external humidity and temp.
I've started trying to set all roughly the same size eggs.
It's easier to do now that I have grown the flocks enough not to need to se pullet eggs. It's so tempting to set the 75+ gram eggs but they don't always do as well anyway.
Happy Birthday to her.Baby chicken lovin girl is 11 today!!