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View Full Version : Is it better to use Metal halide as well as hps lights in flower



mr samsung
01-30-2012, 07:16 PM
I an currently 4 weeks into flower, I have four Plants under one 600w hps. They seem to be growing to big and I only have a 600w mh left. Could I use mh as well as hps in flower, would it stop them growing in hight as they are getting a little tall. And what effects would the mh bulb have on the yield and density of the crop.

mickrick
01-30-2012, 08:29 PM
a 600 watt should be enough for 4 plants, but if ya want or think they need more light give to them, you'll get a better yield burning 1200 watts..
i would rotate the plants regular so they all get bit of both..they should stop growing vertical after 2/3 week of 12/12.good luck hope it go's well for ya..

mr samsung
01-30-2012, 08:57 PM
Do you think I would be ok just putting a 600w metal halide up high just to give it that extra boos of light, or will the metal halide have a negative affect on the crop, and thaks for the advice!

Gatekeeper777
01-30-2012, 09:44 PM
Your right Mickrick. Mr samsung mickrick answered your question.

mr samsung
01-31-2012, 12:04 PM
I agree, I didn't read it properly. Thanks for the advice guys!

bobjob4u
02-01-2012, 10:41 AM
Yes! if you need more light you can add mh. I use both hps and mh when i flower every grow.