I've never done this before, so thought to check here. All the eggs seem to be developing, have vessels and a little floating dark spot that moves a bit. But, the development area is only in 2/3 or so of the egg! And this is true for all the eggs. There is a large 'clear' area (separate from the air sac) that seems to be free floating (not attached to the shell, so it slowly rotates). Is this normal? Or bad? The picture is not showing the vessels in the darker area very well, but they seem numerous and healthy.