Just finished my hatch in the Hovabator 1588 with 75% humidity. 10 of 12 hatched. That's 83%. My best hatch rate before I tried upping the humidity was 25%. We have a very dry climate so maybe that makes the difference. I would not have tried this method except that my lower humidity hatches were so poor that this was my last shot. If I had not had a good hatch from this batch I would have abandoned incubating altogether. I'm glad I tried this and my chicks are probably glad too.
Sometimes you have to tweak and tweak until you get it right and sometimes you have to back up and punt.
