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I don't know, man... For indoor-grown bud, $1/gram would make commercial growing unviable.

What drivers?

How are you thinking of powering them? Eight boards in a 2x4 would be a tight fit, but if you run them soft, you would have great coverage and efficiency. I certainly wouldn't max out that many boards in that size space, though.Waaaaay too much! My fixtures are both 3000k, and they veg and...

No, I use QB120s. Two 4xQB120 fixtures, each powered in series by an HLG-240H-C2100A, at just over 60w per board, for 250+ watts per unit. Edit: I built these lights before the QB132 was released. For my tents (two, each 31"x31"), the 120s give me more than enough power, but if I had a 3x3, I'd...

I hear ya', but honestly, I'm not likely to check a datasheet every time I post, just in case they've updated it. Good on ya' for the heads-up though. Now I'm off to see if they've up-rated the 132 as well...

So it does! Interesting. HLG used to list them at a max of 60w per board, without heatsinks (back when I bought mine). I don't see that driver listed though? I'd still go for the 132s though - same price, more diodes, higher capacity.

That's pushing the QB120s a bit more than HLG intended. I'd opt for a 4-pack of QB132s with an HLG-320H-36A.

You mean 1,200 grams wet, right? Because 1,200 grams dry would be 6 grams per watt.

^^^^ This. I wouldn't even approach 400w.

Per some radio DJ, I once heard that the US average is 5.1". So you can let the ladies know you're better than average! Assuming Cali follows the rest of the nation? Okay, enough about dicks. What are you growing under the 132s?

Well, that puts you above the national average (if you're in the US).

Awesome run, man. Especially that PP x GG4 - looking very sexy!

All trash-talk and drama aside, will you answer this serious question: do YOU think this light is worth $1,400?

Yeah, the fact that they don't need heatsinks makes them both wallet-friendly and simple to build. A cheap and easy entry into DIY lighting. And I like the greater spread/lower diode-density - I can slam these boards right on top of the plants with no ill effects.

No, I run them in 31"x31" tents. For a 4x4, you'd want 8 boards and 2 drivers.

There are many ways to skin this cat, but four QB120s powered by an HLG-240H-C2100A is a pretty sweet setup (if I do say so myself!). I have two of these fixtures, in for around $220 each, at 250+ wall-watts per unit.

Yodaweed will cling to his fantasy till the bitter end. Science refutes his willfull ignorance, but the force of confirmation bias is strong with him.

Just put this silly kid on ignore and let him talk to himself, folks.

Ahh... Gotcha. Looks good!

Did you mean 32"x24"? Because 32"x14" is more like 80 watts per square foot - unless my math is broken today.