I don't think they will make it...

I'm on day 19 (or 20 depending on whether you count the first day you put the eggs on as day 1).
Last week, I had only 2 out of 4 hatch. On day 19, the eggs were all moving around in the bator. The next morning, only 2 were moving. When I candled the eggs after another day went by, I saw the air sac looked like this:

I don't know what happened. I didn't have the heart to look too far inside.

So tonight, I took a peek at these 4 eggs. Before y'all go off on me about candling on day 19- yes, I know. These eggs are so important to me, though.
Two out of the 4 have the same airsac shape as in my drawing. In 1, there is no movement, but the other looks like it might be trying to break thru into the air. In the picture above, the dark spot, thats where I see movement. I'm very worried that it'll be like the other 2 and not survive. Temp is 99, hum 58. They were in a turner, I didn't hand turn them.
Is there anything I can do to save them?( well, the one- the other that had no moment I don't have any hope for)
Any idea why the air sac would be along the side of the egg like that? Is it air? It looks clear, not liquid.

 

Quote:I have been monitoring. It happened overnight. With the first hatch, the humidity was a little higher. So this time I lowered it a bit in case it was the humidity. Hard to understand why half of them would be affected and the other half not. Ugh, being an egg mommy is tough.