i think you should take advantage of your Watts and get a bigger setup so you can actually utalize that power into buds. i mean, its not like your going hydro or aero so if its possible i would try to situate something bigger. With a 600w light i would be utalizing more space than that, and fuck that foil garbage, spend 20 bucks on some mylar. u can get it on ebay , and thats 20 bucks free shipping. You can also use the backs of wrapping paper, but i would just spend the measly 20 bucks and get mylar, People brag about how good white is, blah, nothing reflects more than mylar.