this light is amazing an unknown gem, pulled 17oz dried weight out of a 3x3 with it, been growing since 89 with MH/HPS last year finally tried LED, first was viparspecra xs2000 x5 in a 4x8 tent and they did great at 10oz per plant x5, now i have 2x mars fce-8000 in a 4x8 room, I added the 3x3 to try another strain with and purchased this light, runs cooler than the vipars and was blown away with this light, would have filled my 4x8 with 6 of these these if they had remote ballast