Hey Bodom, great grow! It's inspired me to build my own similar growbox.

I used two 18gal tubs, lined with aluminum tape. The two 3-light fixtures from lowes, and 6 23w CFLs. What I couldn't tell from your pictures is how bright the box actually is. I can't even look inside it when the lights are on, it's like the light of god.

Anyway, I was wondering what, if anything you used to keep the tubs held together well - I've been using heavy spring clips, to try to minimize the seam of light eminating from between the top and bottom. I'll probably try to weatherstrip the gap next, because I'll have to have the box fairly airtight (with the exception of a carbon scrubber exhaust) for odor control.

I was wondering if you had any of these issues.