i dont know about the foil ur using, u could easily cause hotspots with the way foil fold and creases ... if u have the money invest in something proper like mylar or lightning 97% reflects up to 97% of light back to the plant, is much easier to hang than mylar but cost effective in the long run... 75$ 200sqft. u can wipe it down without worrying about streaks... u cannot clean mylar u just have to replace it whihc is a bitch and it gets expensive in the longrun..

but :thumbsup: