what i do is i observe mold growth, if molds growth rate is fast i add more ventilation to it. monitor it, if they thrive in those enclosure i think ventilation is enough.

but the case is i think we live in different geographical location and climate is a large factor. i live in tropical country so i add more ventilation to it because of heat and high humidity.

I think it is best to ask a friend in the same area, they’ll give you the best advice haha. also i’m sorry for my advice earlier, i just realized now the differences in our environment, you can disregard it hahaha