question on eggs

How often should the air for ball python eggs be circulated?

Eggs need very little air circulation. I cover my egg containers with Press 'N Seal to keep the humidity up, and will uncover a little corner about half way through incubation. Although I will uncover the eggs to check on them once or twice during that time as well.

Thanks

I only open my egg tub during the last week of incubation and do so every other day.

I sealed mine with press and seal and only opened the tub once a week or two weeks just to check the eggs.

I use 4 tiny holes in my tubs and never need to air them out or open the lid during incubation.
How often or if you need to air them out depends on how you set up your egg tubs.