I built one of the 2 flower lights I have parts for last night, 9 vero 29 gen 7 3000k 80 cri C version at 1050mah (~72 watts each) I took down one of my 1000 se hps and put this in its place. I was a little disappointed in the output compared to the 8 vero 29 gen 7 4000k D version at 2100mah (~72 watts each) over my 4 x 8 in veg.. those 8 cobs look so bright, like looking into the sun, maybe its the 3000k compared to the 4000k, the 4000ks just look much brighter. My 12 cree 3590 3500k at 50 watts each fixtures that are in my flower room look brighter as well.. again, maybe its the color temp that is fooling my eyes, these 3000ks do look yellow, reminds me of hps a little, nothing like the 3500k cree 3590's or the 4000k vero 29's which are a nice white looking light.