by reflective paint, I meant that home depot sells "metallic silver colored paint" which you can spray on the outside to reflect the light back into the chamber.
I think the idea I was trying to convey, is that if you put some sort of reflective material on the outside, you could keep most of your light in when the doors were closed, but still see through... I believe that "tinting shops " car hotrod places, or somethnig like that sell sticky mylar that is actually rated by transmittance. Like I think certain states have different rules. I thought florida becaues it was so sunny you could have 100% reflective tinting, but in like NY where it's not as bright all the time, 30% is legal, because the cops want to be able to see you when they walk upto your car.
Have you considered enclosing the lights in one of those "bake a round" glass tubes, or "hurricane glasses" ? I've thought about making a blow through, so that the air goes right through the chamber, but never actually interacts with the chamber air. I've attached a crude drawing, Ideally the glass light chamber would have aluminum ducting on either side of the glass tube. And then a fan one one side would draw air out... there's a discussion with better pictures here:
http://www.hempcultivation.com/420/s...threadid=33966
Best, Ocelaris