That ' s why I felt I had to write this guy that posted all the hate on spectrum king and when you get down to it , it ' s not factual . Hopefully he takes it down cause it hurts growers like us trying to get real feedback from people online . I actually bought another LED cause I saw this post , hated it , decided to buy a spectrum king , now I ' m just pissed I spent 1 , 000 $ on another LED when I should of not listened to this post and bought a spectrum king from day one . That SK 600 is the brightest light I have seen to date and I am super happy with the yield they give off . There is a lot of bad press on LED grow lights but from what I can tell spectrum king is the only one I see with so many insta gram posts and you tube vidoes . not to mention I decided to go visit the factory to see that everything is real . . FYI it is great company . FYI do not buy a KIND LED grow light . Worse thing ever . The company actually requires a certain amount of LEDS to fail before changing for warranty . Was the most BS I ever heard . GL