I locked down last night, added two jar lids and chunks of sponge to them for humidity. I was at 30% during incubation with no water. Now I am at 57%. Should I go up more? I have small D'Uccle eggs and large Black Austrolorp eggs and I am worried about the BA's drowning if I go to high. How do you know when the humidity is just right? All air cells on all eggs looked great just before lockdown.