I have a hatch going on right now- from
ebay as well. They started hatching Saturday night and one just popped out as I'm typing this. I have 3 more to go. Today is the start of Day 19. I had 19 eggs, 3 cracked when my son was turning them (they were fertile- he lost that as a chore) so 16 incubating. So far it's a good hatch rate for me 13/16 or 81.25% Which is a stellar catch rate for shipped eggs. I may even make if higher if the other 3 hatch. I'm not including the dropped eggs in the rate as it was major human error and not quail genetics at play.
I don't float test eggs. I candled them on day 3 and 7, lock down on day 14, prior to that turning 3 times a day manually. I increase humidity towards the end of the hatch as well. And once the eggs arrived I let them sit for a day to reach room temperature.
My incubator is set at 100.5 and was stable for a couple days before adding eggs (actually I did back to back hatches of chickens and quails- so it's been running for 42 days with a quick cleaning between hatches.
As far as fertile eggs go- these were wonderful. I can't even get that level of fertility out of my chickens that I have. And I've had worse hatch rates with chicken eggs from my own flock- quite a few with failure to develop. So the girls who lay those end up marked for culling.
Did you have temperature issues?
Have you contacted the
ebay seller?
Did you let the eggs sit before incubating?
Were the eggs shipped pointy end down?
Did you have detatched air cells?
Did you do an eggtopsy on any of the non-viable eggs?
What incubator are you using? Temps? Humidity?
Lots of things to look at especially since you bought a large quantity of eggs.
Was this your first hatch?