I am curious how your hatch turned out. What type of incubator are you using and how many eggs did you have in it? I understand that if your eggs are hatching before day 18, your incubator temp may be too high.
I have built my own incubator out of a commercial beverage fridge with very cheap equipment ($2.50 clearance heater from Wal-Mart, $4 donut usb humidifier off amazon and a $25 controller for both Temp/Humidity, also off amazon) and it is working awesome. I think I have a total of about $35-$40 into it. I only candle my eggs on lockdown (day 15) but, they don't hatch until day 18. Last weeks hatch had 6 viable eggs after candling and all 6 hatched on day 18. This next batch went into lockdown yesterday and I had 8 viable out of 11 being incubated. I'm certainly hoping that all 8 hatch, as well.