Yeah people talk about some of the quantum boards but I would put this up against those any day.Kinda what I expect with its power. It really pushes the light down and it really fills my 2.5x5 very well. I downloaded a light measuring app not the best but it gives an idea and very even from wall to wall even outside the lights foot print. I think three spread out would fill a 4x8 and get solid growth from wall to wall. If needed could bump up to the 300 watt supplies and play with power.