Which COB lights are the best? What are you all using?

Excuse me, have you ever used CMH 630W ballast for plant lighting

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Not that specific brand. I have these.

  1. HPS in 600 and 1000 watts.
  2. MH in 400, 600,1000 watts.
  3. T5 6200k 4x bulb fixture. And 44 watt led uvb-uva
  4. T5 44 watt single bulb led uvb uva
  5. COB 260 watt and 300 watt
  6. COB 65 watt led hgl x2 lights
  7. Parts coming for a 4x COB 170 watt x4 =680 watt full spectrum board light with a dimmable ballast and surge protector.
    I also have 6 more digital dimmable ballast and other equipment.
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