On my first clutch of eggs, they became dimpled pretty quickly... just a couple weeks after being laid. Around day 40 they were TOTALLY dimpled.
Well, I have since had 3 more clutches and I have officially learned a lesson. opening the egg tub every day, or every other day to quickly check on the eggs and or candle them seriously screws up the humidity.
I have left my current 3 clutches alone, and they are all as perfectly round as the day they were laid.
Thought this might be helpfull to my fellow newbees....
All of the eggs in this picture did hatch perfectly though by the way.