I am uncertain when to lockdown my eggs. I know lockdown is day 18, however I am not certain how far along my eggs are. I am attempting to make an educated guess about their ages through candling. I have been using the pictures in the sticky as a guide, but I keep second guessing myself! I don't wanna mess this up!! I am seeing the "bottom" side completely full to the air cell. The "top" side is very dark but I can make out veining in a thin 'u' shape extending to almost the middle of the egg, but not quite. The egg shell itself is green, but was not particularly dark to begin with. Any thoughts on age? I suspect 16 to 18 days, and I have stopped turning now just in case. When could I safely lockdown? Could I lockdown with lower than usual humidity and bump it up in a day or two?