Low humidity issues?

How many days into incubation? I think high humidity is more of a danger during incubation and lower humidity a danger during hatching. During incubation,as long as my humidity is between 35% and 50%, I don't worry much about it.

 

I'm running one of my 1588's and I didnt fill the tray marked "C" up. just a small amount of water. My humidity in the room is around 45% on average. My humidity readings are about like yours, they will average about 42%, and ranging at the end of a 24 hr period to a low of 32%, but when I add water its back up to 45%. I try never to open the bator. Here is how I add water, I take a syringe and a straw go down through the red plug hole and add 30cc per day. Keeps me from opening the bator.

 

My incubator has been running at 45% humidity all year so far and I switch my eggs over when they pip to the hatcher which has very high humidity and haven't had any chicks dry out at all this year.