Hello ! I am new to hatching and have a few ?'s. I had a couple of chicks hatch last night(19th day) they were active for a while then became very larthargic and hardly moving, what could be the problem? How long should they be kept in the incubator after hatching? Should the turning grid be removed and the eggs set on the bottom of incubator? The rest of the eggs are starting to pip. Thanks!!