You can use foil, but most use Mylar.apparently tin foil 'cooks the plants'?
i'm not on a budget, mylar is a pain in the ass to hang. the flat white paint is easy to apply and easier to clean.Like Kevin said, if you are on a budget that white paint is your best bet.
no problem. what part of texas?Sorry,I didnt mean to imply that you where on a budget. I was adding my 2 cents to what you said.