I'm glad you found what works for you. this would never work for me so my % RHis different.I kept the humidity at around 50% until the last few days. if it went up or down some during, then its still ok. At pip, I filled all cells and that makes it about 70%. So see, with the staggered sets even the younger eggs were exposed to that high humidity for a day or so. No drowned chicks.