hahaha the big no no tin foil
yes actually it is.... reason being i have read that tin foil is bad if i had an HID light and thats the cfls dont have enough concentrated
light to produce hot spots

and its also temp. after this grow is done i am re doing the box
with better ventilation and better reflection
but i like my custom lights i am going to keep those
its like a cool tube (rubbermaid) box with a glass bottom and 12 cfls
i have a fan that sucks out the hot and and sucks in new air and it is ported out side the box i'll post pics of that as well at the end of the grow

it ill be ready for 420 :thumbsup: