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Sorry for the questions. So I could also run the HLG-320-C2800 with 3x 304 boards? I'm just a bit lost since the max current on the boards is 1400 mA? Do I simply wire them in series and dim the driver back?

I think I answered my own question. I actually want 3x qb288 ran in parallel on the hlg-320-48a? Correct?

Great news! If I'm running 3x 304 boards... I'm a bit lost on drivers. Can I drive it with an hlg-320-48a in parallel? Or should I be choosing a constant current driver?

Side question... I was going to add a couple pc fans to the frame to add airflow to the canopy. Is there a way to wire them into the led driver or do they need to be run completely separate? I'm simply trying to reduce the need for another device plugged into the wall. Thanks!

Beautiful. Thanks gentlemen. That's about the spacing I was thinking. That makes sense - the equal distance of cob spacing and height from canopy sounds good too. I'll throw some pics up when it's all rolling too and eventually with some par numbers in the tent.

I haven't had a grow in over ten years and I can't get over the advancements in lighting! I have two Mars 300 in a 2x4 tent vegging some 5 day old God's Amnesia and I now realize (despite my original reading) that those lights aren't going to cut it in a few weeks. The kids are doing well so...