Dear All, haven't been on here in a while but I need some advice. i have a small room (closet/pantry) which I am growing in. I live in a terraced house with thinnish walls. I was thinking of adding 15mm plasterboard or drywall to the shared wall. The majority of sound is coming from a 12" desk fan, my vortex isn't loud enough to be suspicious. If anyone could share some tips that would be great! Happy Toking