Hey guys question for any of the lighting experts on the site. I am using a 1000 watt hps to flower a 5' x 5' area. I find that the outsides are a little shaded. I am just wondering what the benefit would be to adding additional light. Usually I get 28 grams per plant, but I have limited space. So if I added another 400 watts during flowering what would be a reasonable expectation on my return?? Any help or experience anyone has would be greatly appreciated.