I have moved to basically "dry" incubating all eggs in a brinsea cabinet. Maybe just adding water twice during incubation and then keeping it at 60 for the last few days.
This has resulted in a dramatic reduction (to almost zero) in failure to hatch of fully developed chicks.
I also usually only candle them twice - once at day 7 and once at day 16 ish. It seems that the less the eggs are handled the better they do.
So "dry" dosn't mean no water at all, right? What's the lowest humidity you use in the incubator? Thanks!