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Only way to do it on one driver is an hlg480H-c3500 then spit it into 5 parallel and it would give you 700ma per string(~75w/board). 5 is an interesting number...would be worth another to make even strings. Or using just 4 honestly and run them a touch harder. If you had gotten the 54v(qb288)...

They don't use meanwells in the CX line. Only the maximizer unless that has changed within the last month. The clu48 change is new, good catch. Still would want 3590's or better for the price. EDIT: Just saw you ordered it. Have fun with it.

That isn't enough to replace your 600w hps. Going to need 400-450w of the best LED's still. Johnson uses CXA, instead of the newer CXB, and also is using 3070 instead of 3590's or other larger LES chips. Plus cheap inefficient china drivers in the cx units. You need more wattage if you are going...

How efficient are we talking?

LEDs start from big wafers(100mm round). That are then cut into individual die(1mm). Not every individual die/piece is the exact same. Some will be better or worse. When tested, the results are ranked and categorized. These categories of rank...are the bins. Production is like a bell curve...

I already showed you it would. And comes with a nice yield increase over the cmh too you seem to want to ignore. If that is not up your alley...that's your deal. But don't ask for something then when it's presented exactly as you ask...try and put it down. Tip the cap and move on then if you...

That light in the grow I showed, cx300's, is a direct replacement for the cmh world. Like a CMH/LEC on roids. Coverage, and intensity all boosted while pulling almost the exact same at the wall. All that comes with a nice boost in yield that more than makes up for upfront difference. And saves...

That is pretty cheap for that size facility with LED when you price things out. Not to mention it a large grows get large scale pricing. They also make money to support such purchase when they make sense. It's not like it's guys spare bedroom with 30g's worth of lighting...it's a full warehouse...

LED's in a commercial setting... They pulled 1.2-1.6g/w from each 3x6 table with two cx300's over each table. 25 tables in that room.

You're outside of the driver's parameters with just one COB. Need a min of 95v on the string.

Photosynthetic Photon Flux...how much total light is emitted by the source...in photons.

The led industry is full of BS. Plant growing is in fact a science...a quantifiable one at that. The most directly correlated factor to yield is photon count. It is also the actual way a plant physiologist or and plant scientist talks about, used, and referenced...many times generally thrown...

Damn @IronLeaf, you're killing it. All your plants look huge and healthy. Keep it up man.

Dude...leave me the fuck alone. Don't quote me, call me a child...then say, "ooh, I'm over this now". You keep trying to take digs at me for whatever reason and then play it off like you're done arguing about how you're wrong...then stop responding. You were wrong...I was right. We are done...so...

Get your shit straight man if you are going to quote me. Hell even the quote you used is exactly the repnse for theis...let me grab i so I don't have to RETYPE IT.... All you have to do is stop quoting me. Don't spew BS, and I will let you carry on with whatever you want. But if you facts get...

Show me where I said you lied?...and where I said you were doing something the wrong way? All I have done is show a better option...cause you asked....and never once did I say that you need to use it. Only that it is better and available. If the fact that something is out there better and...

It all depends on drive current/power. The height needed will be reflected in that too so it is all something that you need to test. As well as the interaction at different levels with different optics...in different configuration. I have shown some 1400ma footprints in my RIU thread as well as...

I already broke down the best case scenario for an SK in post 229. If you want to see it from SK themselves, it's even worse. 88Tsp/101Tj is not good. Two wattages shown...44(page5)1 and 453(page15) so I will do them both...they have 91% drivers 441 x 1.09=404w from the leds 453 x 1.09=415w...

No, I did mean that is what should be used to replace a gavita. That is the bar set now days, and 700w of high efficiency(50%+) is still needed. It's not a choice thing...it's what it actually takes to create the same amount of photons with 50-60% cobs. EXAMPLE -phillips bulb(DE's) running...

2 300w units with 50w cobs...or 1 600w unit with 50w cobs...absolutely zero difference in light output. If I took 2 300 units and welded them...they suddenly become a big more powerful light than 2 300w'ers...no. Light is cumulative and putting more light in the same area is just that...adding...