More often than not, folks will use 2 x 600W in that area vice a single 1000 watter. IMHO when you start getting into this type of set up, one should be using a par meter, to determine the latter. That being said you will be generating twice as much heat. Perhaps twice as much is a figure of speech, you catch my drift. Everything is relevant.Thank you both, I figured that they were getting a larger spread being further away, I just wasn't sure the lights would still be efficient. You would need 1000w to efficiently cover a 6x6 area wouldn't you?
I use a 630w DECMH for a 4x4 area. I have wondered if I could get away with raising the lights and trying a 6x6 with it.
Many professional grows seem to keep their lights much higher than 24"-36" from the canopy. I've exhausted all resources and can not answer why this is common. Is the not a huge decrease of PAR output after 36"?
-GreenCountryGrower