I have a DIY 72 3w LED, all cree XPG and XPE bin 5(clearest optics), 36 cool wh and 27 rb and 9 blue, dimmable meanwell drivers(0-10v) controlled with a RKE, spread out on a 48"x12" finned heat sink, no optics, it's about 2 years old and has worked flawlessly.
I wish I had went with 27 whites, 27 rb and 18 blue, those were all the colours at the time.
If I was doing it over I would add red, green and UV,( I might pop 9 of the whites and add 3 of each ) but I don't think I would change anything else.
Do the research, with some of the new fixtures on the market, I'm not sure if DIY is the way to go anymore. Personally I like the looks of the new Sunbrite fixtures (and the price for that matter).
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