Air cells too small?

[FarmInProgress]

Hello! I have hatched ducks before, but it seems this time the air cells are smaller.
My humidity fluctuates between 45-49%....and I am thinking that not that high right? ( because normally if u have high humidity it makes the air cells small) I only put water in the bator when I turn it on and let it run for the day and then put the eggs in the next.
I can’t make to humidity go any lower because my house keeps the humidity again at 45-49%...(I will post a pick in a bit of the air cells)

 

[FarmInProgress]

Yesterday was day six (when I took this picture )

 

[Isaac 0]

Sorry, no one was able to help, how did your hatch go?

 

[FarmInProgress]

Oh it’s ok, I researched to make sure.....
And my hatch was pretty good, I had 100% fertile rate and 85% hatch. So I got 12 out of 14..

 

[Isaac 0]

Great!