I know led lights are all different, all I'm saying is you are the only one that I have ever heard of putting it 6 inches away ,they may be some more though, but all the information I see on GWE and other places say to keep them alot higher than that ,all I'm trying to do is keep a NEW grower from messing their plants up. And about co2 i never claimed to be an expert like you, i was just repeating what i read Nebula say about co2, that it wasn't worth it unless you had more light than you could use. And I believe Nebula, no disrespect and not you. We are all supposed to be helping each other ,and especially new growers get involved in this great hobby of growing weed easy an not growing weed confused