LED board question

[Randomblame]

after 3 different orders of drivers (and 2 returns), I have finally found what works for these boards.

These actually do a pretty solid job. I picked up some 185-1400ma drivers. When i ran them out of the box, they give me 180 watts at the wall, so 45 watts per light. That is exactly what i was hoping for.

So the total cost per light works out to about $38.

Each light fixture has 3 - 15 watt boards and are wired in series. Then 4 of the lights fixtures are wired in parallel.

I noticed the LUX of these lights seem to be lower then the 6500k lights i was using for lettuce (yes, i know, lumens are for humans) But I don't have a par meter, so that what i am stuck with for measuring them.

I have never tried red/blue lights. Any suggestions on how i would distance them from my plants?

4-8" should be okay and will give you the best ppfd possible with these boards.
The board only run at 15w, well spreaded across your entire grow-area, so I see no reason for more distance.
But I would mix them with a few white strips to get the benefits from both technics.