Not sure you have the height for 50 watts, might be a bit too intense, guess we'll find out...It is for flowering. I am talking about the new 15w LED screw in bulbs. I am going to scrap that Idea and run 2 vero 29's at 50w( flower), and 30w veg
I found out that if I run 10 of the smaller cree xml2 with a 700ma driver, they dont even get warm. I can literally stick them on the lid of my grow box with tape ( testing it day 4, no problems ), and they produce roughly 20w of pure led power. I can add another 2 for 24w in 1 second and $6 bucks later if i need a few more watts.Not sure you have the height for 50 watts, might be a bit too intense, guess we'll find out...
Am at 30 watts and 16 inch height with Vero 18s, you might need more distance.
Running veg with Vero 13s at 350mA, so low they don't even warm up heatsinks, working on jumping up to 700mA with them and should be about right. They are 24 inches from floor, soil line is about 6 inches high, leaving plants a foot in which to grow and be trained. They like it, but feel it would be even better with the higher current eventually.