so once you take out your clear eggs and eggs with blood rings, how do you know at your 14 day candle that an egg stopped developing?
Lack of movement, or it will still look very similar to the day 7 or 10 candling. Unless all of them are stopped, you would also see less darkness in the stopped ones. More darkness at day 14 would be more of the chick. At some point you can even see tiny feathers.