How much does humidity rise when they start hatching?

[Happy Chooks]

I'm wondering how much the humidity will rise once they start hatching? Should I aim for about 60% for lockdown, then it can rise to say 65% when they start hatching?

I don't want to set it too high and have problems when I can't open the bator.

 

[Chook-A-Holic]

I lockdown with the humidity at 60%. My humidity usually rises to about 70% at the most. My last hatch I had the first 10 chicks out of 22 that decided to zip at the same time. My humidity shot up to 88%, and the door and walls started condensing. I opened the vents a little more, and quickly burped the door. The humidity eased back down to about 70%. When all was said and done all 22 chicks hatched. This was in a wine chiller converted incubator.

Marty

 

[mulia24]

mine 70% and when a chick hatches, wew, humidity rise so high.

 

[Happy Chooks]

Okay, I'll aim for 60% then to start.


Should I open 1 plug, or both?

 

[mulia24]

plug? did you mean vents?


i don't know what kind of bator, but since mine is homemade and i have tooooo much power failure, i even open the whole bator, can't help it, i need to use kerosene lamp and make sure the flame didn't fire my polystyrene and the babies have oxygen enough.

but, from many answer i've read, they usually open all plug to make sure oxygen is enough for babies since hatching time is always filled with hot air inside bator.

then, open all those plug.

 

[Happy Chooks]

Yes, there are plugs in 2 vents.

 

[eggybritches]

My humidity shot up ridiculously high when I had hatch. The chicks weren't drying out and I had to prop open the bator. There was condensation everywhere.

 

[shelleyd2008]

I think it depends on how many are hatching. I rarely notice the humidity changing, unless the hatch is really big.

You should open both the plugs, so they can get as much fresh air as possible. This will affect your humidity as well, I've just gotten to where I never have the plugs in.