Some pics of the setup
I will be using a cooltube with a 600watt digital ballast and MH and HPS bulbs

Im using two 250cfm fans on the cool tube, one suckin, one blowin

The closet was cleaned with a diluted bleach solution then covered with reflective white/black poly. A bottom shelf was built to allow an area for seedling and clones as well as storage.

The seedling/clone box on lower shelf
Im also using several fans in the closet to move air

I also have a 110 CFM exhaust fan in the ceiling taking any hot air out as well as another 250CFM fan(like the ones on my cooltube)bringing in fresh air.