Humidity Air Sac Help Please

[LauMin]

Hello. Any advice would be really appreciated.
I am on day 21 and my air sacs are not large enough. My 14% weight loss is equivalent to approximately 15g and my eggs are only on 8 - 11g loss. I was weighing to start with as I didn’t have a humidity meter but then I got one and just focused on maintaining humidity.
If I dry out incubator I can achieve 20% humidity, should I try this until day 25 or is this too drastic?
Should I mist eggs to help with evaporation?

 

[Isaac 0]

What is your humidity at now?

 

[LauMin]

20%. I’ve just removed the water and I had a bit of kitchen towel to help with humidity.

 

[Isaac 0]

20%. I’ve just removed the water and I had a bit of kitchen towel to help with humidity.

I don't think your hydrometer is reading right, I don't see how you could be going 20% humidity throughout incubation and your air sacs are indicating you have too much humidity. Have you calibrated your hydrometer?

https://www.backyardchickens.com/ar...incubator-thermometers-and-hygrometers.73634/

 

[LauMin]

I’m only at 20% with all water removed, tonight.
Throughout the incubation I’ve been at 45 to 55%, I’ve been topping up whenever it goes below 45%.

 

[Isaac 0]

I’m only at 20% with all water removed, tonight.
Throughout the incubation I’ve been at 45 to 55%, I’ve been topping up whenever it goes below 45%.

I would not go that low, especially since you are close to hatching, I'd go for 35-40% until you get to lockdown and then up it to 60%

 

[LauMin]

Ok. Thank you very much for your help.
Would you keep candling and checking weight and air sacs or by this point just maintain 35-40% and cross my fingers?

 

[Isaac 0]

I would candle again right before lockdown. Keep us posted!

 

[LauMin]

I drew around the air sacs yesterday. Do these look awful?

 

[Isaac 0]

They don't look too bad.