Would it have had something happen internally to it when it got knocked off the table?
I don't lower the temp at hatching. I really like the spot check. I bought that when I had the styrobator and already invested in three wrong thermometers. Do the ice bath test on the thermometer. I If it was me I would have set it at 101 also.
How did your other hatches go? Slow development and late hatches? If so, that's low temp issue.
-Christina
Thanks, I will have to look into the spot check. I have the one from incubator warehouse. It has a stand and I put the whole thing in the incubator. Not sure how I would check that with an ice bath. I'm sure I can check my meat thermometer with an ice bath. My last hatch was a few days behind and one chick had a messed up leg. Only 3 hatched and we culled the messed up leg chick as it was never going to be able to stand. I'm hoping I hear peeping tomorrow. I had most of my shipped eggs develope to hatch day and never hatch. Most are head between the legs. Not sure if it's a shipping issue or incubator.
At 99.1 yours will probably be hatching a little late, so I would just keep that in mind and don't panic if they don't hatch on day 21. If you're running the incubator as still air the optimum temp is 101.5 measured at the top of the eggs. If you're doing forced air, then it's 99.5 measured anywhere in the incubator. So at 99.1 yours should still hatch but they'll most likely be a little bit late 
