Hi, I got a Janoel 48 incubator for Christmas. I just got it out to use it for the first time (now it is to late to return it). It will hold a steady 45% humidity but I can't get it to go any higher. I am just testing it right now. I live in a semi-arid region. I put a wet sponge in there but it only went up 1%. Any suggestions? I do not want to get to day 18 and not be able to increase the humidity.