Dude i got this link from googlevideo i hope it helps

http://video.google.com/videoplay?do...519&q=cannabis
OmegaVermelho Reviewed by OmegaVermelho on . Growing problems i have recently started growing my own s**t,but my plants seem to be dying under the hps lamp.its about 18" from the toops is this too close or could it be somthing else?if any one knows what could be wrong please help.cant be losing precious potential bud.:( Rating: 5