I have to ask y'all what kind of hatch rates you get on average. I have the best hatch rates with broody hens, usually 80% or better. My last 3 incubator hatches were really low. The last one produced 0 babies (out of 20 eggs), and the one before that only produced 2 (out of 32 eggs). My first hatch was about 60%, second hatch about the same, third hatch only 4 out of 16 hatched (25%). We've had 5 hatches in the past year with 3 of them being duds/25% or less. I have eggs that I set this last Wednesday to hatch on January 3rd/4th. I will candle and cull on day 10 and again on day 18 at lockdown. Some of them are shipped eggs--if any hatch, it will be the first time I've ever gotten shipped eggs to hatch so I'll be doing the happy dance!