I balled up paper towel, wet it down and popped it in mine when I couldn't get my humidity up. It raised it from 60-70%. You might want to give that a try.This is my first duck hatch but that’s the information I read. I have mine on lockdown but can’t get the humidity over 60%, at least not consistently. I currently have two little hygrometers in there that I bought from amazon and they seem to read 1 or 2% from each other.