High Pressure Sodium, though I suggest buying a multi-spectrum bulb when your MH burns out.
haha thanks i just got my light set up and for $60 off cL
i grow medical so i was wondering about light what. I have 55 clones right now and i can have 24 in flowering so what wattage would be suitable for those plants or would i need like 2 lights ??
I have 2 100w cfl's and 3 60w cfl's from lowes in there too
the blue spectrum..... are those available at depot stores???
Hps all day! if your going for a dual bulb mh & hps make sure your ballast complies! BOOOOOM
I would suggest sticking another CFL on each of those boxes, but this is optional.