JMcG
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These are the comparison videos. The first one is long and mostly babbling opinion of the owner.
The second one is the lab testing. They are long but hold real information that helped me decide on cmh.
LED has some great benefits too. More terps according to this and much research.
Good comparisons! That guy is a trip but does some great researching.
4-5% increase in THC? Good enough for me!
I think I will try to mix up my 600 hps with 315 cmh. I have eight of the 600 s set up right now ( two rows of four ) with a 40" spread. From what I have read 40" is too large a footprint and 30" is better for cmh.
Do you think I can get away with switching every other light to a cmh and keep the 40"'spacing ?