If your bator has a fan you shouldn't need to rotate. However I'm still a novice at hatching so I'll let the Great and Powerful Oz or one of the other Chicken Masters to chime in.LOL.. funny auto-correct!
Quick question.... I just set my first ever eggs in an incubator on Saturday. There is an automatic turner, and temps are staying right between 99 & 100*F. Humidity is 22-25%. Do I need to rotate the eggs to different spots or just leave them? I plan on candling at 7 days, so will probably rotate around then and candling around day 12, and at lockdown.... ... Just wasn't sure if I needed to before that, and more often?