so, I suspect I've had poor ventilation in the cabinet incubator I made. I've looked all over the internet but still have not found anything that seems to strongly confirm my hypothesis. so, my chicks have been dying mostly around day 16-19, they have excess fluid in their bodies(in spite of correct humidity) and have trouble absorbing their yolk sacs and there is a foul smell when they hatch. Today I went and drilled 30 holes in the plexiglass door of the bator. the temp dropped 2 degrees in there within a few minutes, so I'm assuming that the holes are helping with ventilation. Is 30 holes enough ya think?