Are holes in tubs needed???

This is defineatly something i should know. But is putting holes in the tub needed if the temps and humidity are ok? There is proper venilation through the top of the bin, but is it enough? Never really thought about this until now.

It depends on how air tight the tubs are.

If temps/humidity are correct simply opening the tubs every day or every other day should be more than enough.

Proper airflow/air exchange is important. You want to avoid stale/stagnant air like the plague.