First relax. You’ll be OK. I know, easier said than done. It is an exciting time.
We all do these things differently. There is seldom any one way that is right and everything else end in disaster. That’s part of the reason it can be so confusing, so many different things can work.
Baby chicks absorb the yolk before they hatch. They can live at least three full days and often longer off of the yolk. They do not need to eat or drink for a long time. You do not need to give them any food or water while they are in the incubator.
Sometimes all my eggs hatch within 24 hours of the first on hatching, sometimes it drags on for more than 2 days. That’s another reason it can be confusing, each hatch is different. Some people remove the chicks after they have dried off, some wait until the hatch is over to remove any. One of the risks if you open the incubator during the hatch is that a chick that has pipped but not fully hatched may become shrink-wrapped. That’s where a membrane around the chick dries out and shrinks around the chick, trapping it and preventing it from hatching. Shrink-wrapping does not happen every time you open the incubator, it really does not happen that often. There are a lot of different things that factor into that. If I have an emergency I’ll open the incubator but generally I leave it closed until the hatch is over.
It is traditional to take the turner out and increase the humidity after 18 days of incubation for chicken eggs. If you set them on Tuesday the 6th, then Friday the 24th would be after 18 days of incubation. After this the eggs don’t need to be turned so you take the turner out. That makes clean-up easier plus you don’t have anything in there that can trap a chick’s legs, wings, or neck thus creating an emergency. You increase the humidity to help guard against shrink-wrapping a chick. All this is often called lockdown.
Especially since this is your first time, I’d leave the clears in there. As long as they are not stinking like a rotten egg they won’t harm anything. I normally candle on day 18 when I go into lockdown and remove clears then, but I suggest you mark the ones you think are clears and see what happens. I’d hate for you to make a mistake and throw away a good egg. After the hatch is over see which ones hatched and how well you did in your candling. Treat this first time as a learning experience.
You can look up in the Learning Center at the top of this page for a lot of great information about hatching eggs. Good luck and welcome to the adventure. It’s a fun ride but can be stressful.