Well, this was my first vertical grow... first hempy grow... first CMH grow... first time using CRFs for nutes... and I screwed up PH big time... but still getting a yield:
I used to do about double this with a 600 on the mover though... but DWC was such a pain in the ass, I'm trying to learn hempy.
I loaned a buddy my 600 HPS, and am using his 400 watt mag ballast to try out the CMH bulb... really nice trich production the last grow, but I'll only know if the 600 does better after my buddy grows these same strains since I can't anymore.