Hey GC, I'm just getting my second grow attempt underway and I had a quick question. I found a 200W replacement CFL that is 62W. The color temp. is at 4100K. Is it useful for a grow in anyway or should I stick with the 2700K and 6500Ks?? Thanks! Kyung Yi
4100K is the equivalent to morning sunlight, while 6500K is more like mid day/ afternoon. So yep, use it.