Most of the real hatching pros around here candle only on days 10 and 18 (the last day the eggs are turned). They also leave any eggs they are not SURE about in the bator until hatching. I would check them more often for weeping or smell, though.
Handling eggs too often increases the risk of damage to the eggs, in particular dropped and cracked eggs. One bycer recently dropped a while rack of half-incubated eggs while moving them, and lost the whole rack.
Handling eggs too often increases the risk of damage to the eggs, in particular dropped and cracked eggs. One bycer recently dropped a while rack of half-incubated eggs while moving them, and lost the whole rack.