It really depends on the chicks. Some will zip and hatch within a few hours, some will pip then sit for awhile. It can take a good full day between pip and actual hatch.
So far so good 2 hatched 4 more pipped We are very excited this is our first time hatching any thing and after I heard the awful stories about the LG 9300 we were afraid we weren't going to get any thing to hatch