I'm about to setup a 30q (Iris MCB-L) tub and want to know the minimum amount of holes I should start with (I'm a bit nervous about humidity levels after my fiasco with my tank experience), but want to make sure he's got enough ventilation in there. The tub will be in my bedroom so there will be a/c, and temps around 75.

I've heard of putting holes low on hot side & higher on cool side, and then seen where holes are just drilled all the way around the top, so please be as specific as you can. Thx for any/all help.

Oh, one other thing, I was told it was a necessity to cover 3 sides of my tank but I haven't seen one person mention doing so with a tub...is it ok without it?