MH's give off a "white" light...better for vegging. I've seen enought pics to see the difference between MH and the yellow/red of HPS lights...

I would kill to have two 400 watt'ers....for flowering. But, first you got to get though this tricky veg cycle. You say, "old style" 400 watt lights?...magnetic ballasts?...if so...I think, they are better, more dependable that digital ballasts. CMH bulbs work great in magnetic ballasts.

...anyways...the Uv rays from MH's are tricky...watch for leaf burn. I found it's better to "offset' plants some, under the light. Seedlings are very, very tender. And rotate plants, too. (but, not with the light on, I burned my knuckles doing that...)
Dutch Pimp Reviewed by Dutch Pimp on . Master Kush, Aurora Indica Perpetual Grow "So why do you have a key lock on that bedroom door?" My mother inlaw asks me while she was here visiting recently. So you don't open the door walk in, have a heart attack and die on the spot! I keep large highly venemous snakes in there, no cages, they just hang from the ceiling fan! As for the rest of you here, welcome to my grow! You have a key to the room. Enjoy. Be nice! Here it is, my very first grow log. My hope, is that by posting this, I will be able to get some great Rating: 5