Humidity for incubating duck eggs

[Conolii0316]

My duck egg is now on day 22 and I am not sure how much I am suppose to higher the humidity. I've been setting the humidity for 45~55% but now I have it on 60~65%. I am not sure if this is the right humidity or not. If anybody can tell me the ideal humidity for the duck egg on day 22 till the day it hatches, please do. Thank you.

 

[Mercster10]

I'm on my 22 day as well and the temp should stay close to the same but you should get the humidity pretty high. 65 is good but if it is possible to get it to around 70 or 75 that is even better! Good luck!

 

[Conolii0316]

Okay thank you! Also, I didn't notice any big size change in the air sac but is that okay?

 

[Mercster10]

Yes it's okay only a few of mine have started to get bigger but the others haven't yet. It could take some time. This is like a game of patience and you sound like you are doing everything you can.