Now I am no expert but I run my humidity around 20-30 days 1-18 and up to 45-50 at lockdown. If I still have a few pips hanging around after day 20&1/2 I may bump it on up to 60% because at that point I feel like I don't have much to lose. (I always hatch on day 20) But with an air cell too large would that not mean the humidity is too low? I have never incubated anything but silkie and showgirl eggs ( a few bantam leghorns) so I do not know what a larger size egg would look like or how much room LF take up in the egg.
Do all your eggs look like this one?
Has your temp been good?
Did you calibrate the instruments you are using?
Are you only using one hygrometer/thermometer? Flukers is the most accurate IMO. 20.00 at Pet Smart.
I have found the hygrometers to be off by up to 20% before.
I am including a link with a pic for refrence only I did not read the page but look at the pic half way down the page.
http://www.poultryhelp.com/hatch.html
One thing I started doing was at lockdown was place the eggs on thier side with the lowest end of the air cell up 9 times out of 10 they will pip right on the low end of the air cell. I am not sure it helps the chicks but it sure helps me when montioring during lockdown. It makes sense that when the chick pips it helps not to have it pip on the bottom of the egg anyway so gravity is working for you not against.
Feel free to call me I will help all I can.
Do all your eggs look like this one?
Has your temp been good?
Did you calibrate the instruments you are using?
Are you only using one hygrometer/thermometer? Flukers is the most accurate IMO. 20.00 at Pet Smart.
I have found the hygrometers to be off by up to 20% before.
I am including a link with a pic for refrence only I did not read the page but look at the pic half way down the page.
http://www.poultryhelp.com/hatch.html
One thing I started doing was at lockdown was place the eggs on thier side with the lowest end of the air cell up 9 times out of 10 they will pip right on the low end of the air cell. I am not sure it helps the chicks but it sure helps me when montioring during lockdown. It makes sense that when the chick pips it helps not to have it pip on the bottom of the egg anyway so gravity is working for you not against.
Feel free to call me I will help all I can.