Optimum humidity on last 3 days?

[Scraps]

First I read 60-70. Then someone else said 70-75. Someone else posted 55. Today I received my Ebay eggs and their instructions said 90....which one is correct?

 

[ozark hen]

Please take a couple minutes and read this?
https://www.backyardchickens.com/LC-hatch.html

 

[Scraps]

And that says 70-80

Seems like a wide range of opinions, from 50% all the way up to 90%. My bator is at 71% right now and I guess thats where its stayin'!!

 

[Tuffoldhen]

It's always best to try a few hatches and find what will be the best ranges for your part of the country, climate and house. I have nice clean hatches using 40 to 50% range from day 1 thru 18. Just somewhere in those levels. Last 3 days Iuse 60 to 70% range and nothing higher. You will get lots of opinions but it's just what works best for your climate and home.