Quote:
I would give them two more days
X2 and then some
I generally give my coturnix eggs the whole 21 day spa treatment before I try to monkey with them. I give any (locked down) eggs in my hatchers a 7 day lease. After that, a float test may be preformed, but I generally just evict the leftover unhatched 21 day old eggs. If it's the whole batch, then I would float test, or scrap the batch and recycle the hatcher.(Never had that happen, but it could).
I generally get the bulk of my coturnix hatches somewhere between day 17 and 19 based on my bator and hatcher settings, the moon cycle, the color underwear I'm wearing, or what ever.
Breaking lock down, for any reason other than retrieving a chick, may actually belabor the hatching process...IMHO!
I have had chicks hatch on day 16,17,18,19,20, and even day 21.