I've also been told LED's are useless.. I'm not entirely sure that's the case but I don't want to be let down in yield if they're crap. Apparently if you use a light meter under a LED 1200 you get the same amount of light from a single 20w LED from the hardware store.. IDK I'm sticking to what I know until I get proven results like the ones I get from my 600HPS yeaahooow its summer all day long under that baby ��