no it doesnt hurt them most people candle on days 7, 14?, and 18 when they are lockingdown...i think its 14 it might be day 10 hmmmm. i'm gonna candling at days 5, 13, and
edit: lol if candling doesnt get the best of me some candle everyday up till lockdown
you might have internal pips i have never incubated before so idk they might be getting ready to hatch i would watch them carefully. are you useing an auto turner?