title says it all. i dont have much money and realized it would be much cheaper to just buy a bulb and make my own reflector, but i dont know what to use as a reflective surface. i was thinking of using visqueen plastic, but i think it might melt. according to a video i saw, visqueen plastic is a very good reflective surface to line the walls of your grow room, so i figured it would work well for a growlight reflector. are their any better ways to do this?