I put 8 duck eggs and 12 guinea eggs in my skillet two days ago. The temp was up and the water was warm, but I'm worried the humidity level wasn't high enough. I didn't measure the levels, but I notice that today there is a film of moisture on the window and when you open it, it is more humid inside. I think next time I will let it sit for a day, or two before adding eggs. I'm not too worried about the duck eggs they can handle humidity changes I'm told, but we'll have to see on the guinea eggs.