My Hermann has laid 5 eggs in total, 3 four weeks ago and 2 last week. The 3 laid 4 weeks ago look exactly the same, no chalking at all, does that mean they are not fertile? Also struggling with humidity currently 60% and heat 32, I have a homemade incubator, I loosened the top so doesn’t get too hot but obviously the humidity goes down then. Any advice gratefully received. Thanks in advance.