I've hatched about four batches of silkie eggs and everything dies at day 20! These are posted eggs from reknowned sources that I let set for a day before I put in incubator. I usually lose about 50% of them in the first 10 days and then the rest die at day 20. I incubate at 60% and 37.5 degrees celcius. Then have humidity at about 70-75% at day 18 lockdown. I do not open the incubator until a few days after hatch date when I am sure nothing is happening. I clean and disinfect incubator before and after each use. Incubator has good ventilation. Eggs do not pip and die with yolk nearly fully absorbed. In my opinion, the eggs seem very liquidy upon eggtopsy with lots of amber coloured fluid. Other people have had good success rates with eggs from the same places.