It doesn't have to be ON the eggs to be IN the eggs. Water that condensates in the eggs air cell is what will drown the chicks when they pip. They pip into the air cell and instead of a breath of air they get a nostil full of water. They drown.
If you have condensation on the windows it is relatively high. At 70% in my hova there is no condensation. At 85% + there is. That is too high for text book chicken hatching.
If I were you I might would open a vent and let some of the moist air out.
If you have condensation on the windows it is relatively high. At 70% in my hova there is no condensation. At 85% + there is. That is too high for text book chicken hatching.
If I were you I might would open a vent and let some of the moist air out.