Thanks for the tips. I had already put a single coat of flat white on the walls in there, but as you can see, it could use another. I do also have a bunch of white plastic that I was planning on lining the closet with. (That's what that big white wad of stuff to the left is). Would that work better than the paint? Mylar, unfortunately, is something I can't get my hands on anywhere around here. I live out in the boonies and anything even a little exotic for growing has to be ordered. That's why I used the foil and flouros. What I would like to do is build a grow box out in the room with a halide and just use this setup for veg. But first I want a proof of concept. That's big money and I don't want to just waste it. Thanks again.