So now that I've got the pellet stove, I'm noticing dryer air obviously, which is making my kids and wife get stuffy overnight as they sleep. Doesn't seem to bother me much, but I'm wondering what options are? Do I need a humidifier for all 3 bedrooms? Also, how humid should the air be? Most of the humidifiers don't come with a display, so if you run them all night, how do you know they aren't putting too much humidity into the air? Suggestions?