if a vegging plant can only handle 3500 lumens then why do people use MH bulbs when they give off way more than that (correct me if I'm wrong). Side note.......plant looks good and environment seems to be perfect but I noticed that the rapid rooter in the center of the hydroton is dry, very dry......is that a problem???? Took pics.....but don't have the cable .....soon....stay with me.....