One of the Gold Mine plants produced 3 oz of dried, trimmed bud and would have done better with more aggressive training. The other plant only produced 48 grams. Quite a difference, not sure why. My lights are pretty strong_ produce about 700 umol/s evenly with very consistent PPFD coverage. I have two lights in a 3x5 foot space.Each light is 4' long and 4"x4" square.They each draw about 360 watts each (or something like that). This grow was the first I used them and I love them. They produce true white light so there is some green light_ which some folks say is a waste_ but I got the best results ever using them. I think this may be due to the 700 umol/s and the very even PPFD. With just one grow under them I don't have much to go on, but we'll see how they do with the experiment i'm about to conduct now. They are the nicest LED's I've used_ you don't need any special glasses to see color_ just sunglasses cuz they are so bright. In fact you need some headroom for these lights because I had to keep them at least 24" from the canopy. I haven't used CO2 ppm cuz my temperatures never get over 80....most of the time they are in the 72-77 degree range, except during flowering when I try to get the nighttime temps down to about 68-70 degrees. The experiment I'm just starting is using two quick autos_ NYC Sour Desiel Haze_ am going to run full strength nutrients through one and half strength through the other. I can flush them real easy so not too worried about nutrient burn. Using a mix of coco, perlite, grow stones and worm castings. Hope that helps some! Just started a Grow Journal so can report as things progress.