I have for a looong time always do staggered hatches in my incubator and have no probs. I have hatches nearly every day. The hatch rates are extreemly high for me. The three days you start lockdown, take the automatic turner out, keep those babies that will hatch, separated from the other eggs as much as possible(barrior) otherwise after they hatch, the babies will be knocking into all the other eggs, trying to walk, makeing a mess of them all over the incubator and causeing possible detrimental damage to the developing embryos. Also, hand turn the later hatching eggs. After you take the chicks out, i would recommend takeing the other eggs out, placeing them in a dark colored towel in a cooler, and thoroughly washing the incubator, then placeing the later hatching eggs back in. When i clean out my incubator, I have become quite fast, efficient and thorough, which prevents the eggs from cooling too much. Since I have a small number of hatchlings nearly every day, I do a quick wipedown of everything when I remove babies(after all eggs are removed), and every 3-4 days, the incubator gets sanitized. Its alot of work, but worth the effort. Staggered hatching IS perfectly ok if you know what you are doing or have the time. I have absolutely no problems.
