Hi Green, it’s an 9x12 room, 18 buckets, 2 six bucket aero systems and a 6 bucket DWC system we built. we have a 1000wt dual arc tube MH/HPS dimmable HID light. I really love being able to adjust the bulb from 600wt to 750 to 1000 and then the extra 10% "super" switch (I would highly recommend this light to any HID friendly members and a 300wt (286wt actual) LED adjusted to my requirements and another one with IR added coming. I had 2 6' tracks to start but didn't know if I wanted 6 or 4' so i waited until I could see what was going on and how well the lights covered the area but I'm pulling one and putting 2 more 4' tracks in. I believe that from past experience i can get the same or better results with the movers over more lights. I was asked to test this LED compared to the best HID available. I read spectrums as part of my job (small part) and had a bit of experience many years ago and with health issues that have popped up recently, I was convinced to give this a try after 20+ years of not even smoking. I used to get 3+lbs off a 4x8 (actually my xwife reminded me it was more like 5x9 but with my stroke, I don't always remember exacts) flood table every 75-90 days. with my health issues, I didn't have 9 months to wait for photos to clone and ripen to make oil and to make oil, I need some weight. the friends that convinced me to do the comparison on lights showed me the studies on health benefits from doing this. that’s why only 2 lights to start. I needed to see which would be the best and hands down, this LED is just mind blowing. I had a real rocky start here with the autos, but I did when I went from mountain growing to inside cloning as well back in the late 80’s. Thanks for stopping in J