Candling dates are mostly for air cell development.I have only incubated once, but Iām pretty sure I first candled on Day 5, maybe 7, then 11, then 14, then 18. Yeah, I was a little anxious. I can go back in my records and look to be sure if I need to.
Usually you see development on day 7 and can toss clears and blood rings on day 14.
Day 18 is setup for hatching-- lockdown. this is the day you decide on the questionable eggs