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metal halide to hps ballast
Posted 11 January 2013 - 05:30 PM
Similar Topics: metal halide to hps ballast x
Posted 12 January 2013 - 07:54 PM
Use the 400w Mh ONLY if you have a DIGITAL BALLAST, as they go both Mh and HPS, don't try this otherwize.
I Just bought a 400hps light with ballast.
I am deciding to buy a metal halide bulb for my vegging.
My question is, can I just buy a 400mh bulb to use with the hps ballast?
Also, if i'm growing a sog in my 100×100×1.8 tent, would 9 plants be okay with the 400watt hps?
1.0m x 1.0m x 1.8m = Yes better with 600w but will do 9 plants well, use a fan and a vent
Posted 12 January 2013 - 10:52 PM
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