I don't know for sure Deb, but I was told around 60% so that was what I kept it at. I had a lot of ups and downs, temp and humidity, and still had a 50% hatch rate with shipped eggs. Just do the best you can I guess, no telling till its over.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.