Hey Dutch,

I think that the CMH bulbs are great, the only limiting factor is 400w is the biggest size available. Hard to cover a 4'x4' tray with one, and two becomes a rectangular foot print, that's just not large enough.

My first "fogfgonugen" setup is using 2- TI Problooms per 4'x4' tray. (2 trays per setup) for a total of 4- Problooms and a total of 1320watts of LED. They are mounted on a light rail, moving just 2' each way and working out very nicely.

For the second fogfognugen setup, I went with 1000w SunPulse MH over each tray; using 3k bulbs for flowering and changing them out for the last two weeks to 10K bulbs. Excellent results, with out resorting to supplemental UVb. Both setups are on shelves, one above the other. Pretty impressive to see 552 "plantlets" of SOG all growing at one time. :thumbsup:

BTW for everyone; while I was gone I oversaw a side by side by side experiment that had UVb from start of veg to flower to finish, Uvb for just flower period and no UVB at all. We used 5 different strains and the results are interesting. I will try to post it all in the comming days.