I ran some tests last night.
With no water in the unit, the humidity ranged from 10-15%
1 channel filled with water, the humidity ranged from 29-32%
Both channels filled with water, the humidity ranged from 30-32%
I had the incubator in my basement, so maybe I'll move it to the first floor and see if that makes a difference. If that doesn't work, I'll try the sponge/water method and see if that will raise my humidity.
Just want to make sure my unit is doing what it is supposed to do before I start hatching eggs.
BTW I now have an automatic egg turner problem! As in, it doesn't work. It won't move at all, even if I try to move it by hand. It seems as though the motor is locked up.