Hi from down under. First time at it. Put in 24 eggs, at fan forced 37.5 degree C and humidity above 60% and on the 6th day candles and all of the eggs had air sack. Most had blood veins, but a few had air sack but can't see any blood veins, just dark then the light coloured air sack. Then today being 8th day, I saw the once with blood veins, inside was moving! Floating around I side. (so exciting) but the ones that's dark and no blood veins still stay the same with air sack. What the status of these? Where no blood veins can be seen. Are they in the advance stage? Meaning they are pass the veins stage? I got one male to 6 females and all my eggs got air sack. Is this a sign of 100% fertility? Or do normal eggs in fertile also gets air sack when incubated? . Thanks in advance!