For the computer fans.. Find a 12 volt power converter. Say a old cell phone charger or some kind of little appliance powercord. Just don't wire strait 120volt. 'TIN' foil is your enemy. Metals conduct heat. White paint, white construction paper. Something. After I pulled the foil from my first grow a few years back, the temps dropped 5 degrees. :smokin:

beSafe:jointsmile: