Have you calibrated a hygrometer?My ducks air sacks seem small too on day 14 - what should I do I’m going crazy - I’ve taken the water out and misted them instead today. I’ve put them back in with only bit of water in the tank - my incubator has 5 water wells - I’ve just put half cup in as was more in there - is this correct ?
I never go by my incubator readings
I run little giant bators and it has 5 Channels I only run water in one and not full either and get 45-50 % humidity
My air cells are where they should be
Edited to add
You have time to correct them at day 14
Could you take pics of the air cells
If they are to small I would run around 40 % for a week and see how they do
If still a little on the small side go to 35% if they have caught up then go to 45-50
I cool my eggs and mist them but not in the bator. I don’t want my bator running higher humidity then it needs