SupraSPL
Well-Known Member
..first grows were micro size, using fluoro and a pair of 70W HPS. Then with KNNAs help, switched to DIY LED 140W for starters. It was 26% efficient and that was early 2010.Hey!
Sorry for the questions in your thread supra!
I have a question for you: what kind of light you have before leds? And how many gpw you use to have before switch to leds?I believe it is a good question to ask to led/cob users, the difference between now and before. Have a great day ★
Best results were .9gpw but I was watering in ferts that I thought were organic but was actually force feeding petrochem (Age Old Organics). Ironically I switched to Epsoma granular ferts which says organic across the bag, which are non-petrochemical but not from organic certified sources. In other words it could be chicken litter and feather meal from industrial farms which may have more harmful contaminants than petro chem ferts so I got the worst of both worlds. Just trying to grow the cleanest natural product so now I make my own worm castings and compost from organic certified scraps and material from the forest. Supplementing with chicken litter from certified organic layer hens.
Eventually I got an opportunity to scale up so I went with 600HPS X 4. Best results were .57gpw but average was about .4gpw (organic soil). The quality of my favorite cuttings was noticeably decreased under HPS. Started adding some LEDs back in late 2013 (XTEs and XPEs) and gpw numbers increased to .6. Then COBs came out in 2013/2014 and I started adding them in (CXA3070 3000K Z2s @ 700mA) Once I started mixing in COBs with HPS the gpw numbers jumped up immediately to .8 or .9 and once all the HPS were phased out the numbers have never been back below 1 gpw. Now I am phasing out the reds deep reds and blues. They are still working great but the efficiency is falling far behind the COBs.
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