Hi, I built a wooden box to use as an incubator and I'm having trouble getting the humidity up. It sits at thirty no matter how much water I put in it. Could the wooden walls be soaking up all the moisture? Also, the incubator is way too big. I only have six eggs and i reckon I could fit three trays of thirty in. So I guess the size could be affecting it too. I already set the eggs. Low humidity at the start is ok right? I'll just need to fix it up soon. I'm on day three at the moment.