630 cmh. Over the 2 trays it's a mix of 3100 and 4200K bulbs. Temp wise with all 3 running I'm 78 degrees. I can run 3 lights and be cooler than running 1 1k.
Ya so with my room being only 7ft tall my plant finish height cannot be more than 3ft or the tops bleach due to being too close to the light. Currently my lights are as high as they can go and the sour dubb is still only 23 days in. Still another week of stretch to go. Height they go in at right now is all strain dependent. My kinds that really stretch, they go in under a foot. My ones that double get a little more closer to 1.5ft. With the coco, for me, I see the best results when I multifeed to runoff. I feed 3x a day for 1 minute each time. I've tried handwatering 1x a day like a soil plant and the results were nothing special. Multifeed is where it's at for me. As for drippers, I got rid of them. I run open ended 1/4 tubing. Delivers the water much more efficiently without the chance of a clog or pressure issue but I still run drip clean.