Well I will try again ADJUST THE PARABOLIC SO IT GIVES A WIDE EVEN LIGHTING. It will take some time to do this but my room was only 13 x18 feet. on a suncircle and produced .468 g/w/m Its a real bitch to adjust the light because of the type of bulb , the mounting bracket. Note this picture, and remember its running on a suncircle, so the far edges 6-10 feet away will get even lighting when the suncircle get there.