When I give hatch rates, I count every egg that goes into the incubator. Since they are all my eggs now, I feel even infertile eggs reflect back on me as do early quitters.
Over the years my hatch rates have been from 0 to 100% and everything between. The 0%ers had been way more common than the 100%ers.
That's with two LGs, one huge DIY combination incubator/hatcher in a two compartment cabinet and 3 older generation 1202s and 1250s Sportsman cabinets (two...