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Discussion in 'Growing Marijuana Indoors' started by PS2_MAN, Sep 8, 2002.
What is better for growing a High pressure sodium or a Metal Halide??>>........
MH is so much less productive that there is really no compairing the two.
if u have two setups next to eachother...u will see a HUGE difference. MH should be only used as an extra light source for lumes or maybe red's in a florescent situation.
HPS is unsurpassed for all types of indoor growing.
I assume you are confusing the two? MH gives off a supplemental red light? I thought it was higher in the blue spec. than that of a red, and HPS is highest in red. so why would one use a MH for reds while growing with flouros?
Stick with HPS.....