I am on day 17 of my incubation and I have maintained a perfect 99.5-100 degrees and 35-45% humidity.. Correct me if Im wrong I need to try to hit the 75% humidity mark on day 19-20-21 correct? I have new clean sponges on stand-by to try to maintain this level in need be. I have 44 eggs ready on the 22nd and 3 kids foamin at the mouth to witness the process! Finger crossed!
Myself I set at 60%, not any higher than 65%. Has worked for me for 50+++ years. Any higher and they start drowning.
I would start at 65% The humidity spikes when they start hatching out and you don't want to spike too high. Hard shelled eggs like Marans sometimes like a higher humidity at hatch, but mine hatch out around 65 too. Good luck!
