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Whew! Long read! Worth it! :clap:

Yeah, I've got no problem with 20, although I'd like to go back and see how much I'm saving in efficiency for the 16 I'll be running in flower. The other 4 are going in veg, and I'm not as concerned about. I would like to calculate how long it'd take me to make up the 300$ difference, essentially.

Ah, just read up further. The AB's aren't the top, but next to top? Still slightly better than the Z2's and 4's (in terms of efficiency), correct? I still haven't gotten that part of the data down pat yet. I've been keeping my eye on this stuff, surprised I didn't see that posted a week or so...

Are these the top BIN 3k's? It seems so, but I'm not certain. http://components.arrow.com/part/detail/66495635S856664N3333

That makes much more sense! The text "this" and "these" are product links. One was a 12V PSU with a molex connector, and the other was a splitter for the fans.

I'm still trying to figure out how you connected everything inside. I'm missing something. What is your power cord coming out of, the 12VDC? If so, do you know which one you used? I can't find one (other than a CPU PSU) that has a wall connector. Also, what are you connecting the drivers to...

That heatsink you posted looked a little small for a COB, it would almost certainly require active cooling. That particular heatsink looks like it may be better suited for some star LEDs, but that well in the middle could cause some problems if the dimensions aren't right.

Yeah, I can't see a 2x2 tent holding more than two half SCROG'd plants, let alone 3. One good SCROG job should cover the entire 2x2. I'm only going to run 2 plants per 5x4 footprint.

Hmmm, $60 a pop is pretty pricey, I'd almost rather make the investment in 20, and build out that many lights than pay 2x the price per COB.

Any new results?

I'd love to see what you went with for drivers and PSU, and how you laid those out in the rail!

That would put this baby over the top, wouldn't it? I agree, that supplementation would be a great boost, I plan on putting them into my build here soon as well. Nice, clean build, lots of proven power in these COBs... Great work!

Like Supra has? Gotchya. Yeah, can't argue with those results, some fine fine ladies! In a 2x2, just trying to spread the light, sounds like you should be ok, although I've got a penchant for pushing the envelope, so I'd say add a 4th 3k and go for a 4 corners (3k) + 1 (5k) middle approach, but...

How would you design the light? That sounds like a good mix, just unsure how you would get a nice even spread getting that 5k in the middle. (long night last night, still a little foggy) :bigjoint:

Think I would have to actively cool those? Not sure how hot those stars run.

I was thinking the same... Great to know that the first words to come to mind from you weren't "That's overkill!" So, maybe 2x 660nm per foot? Hyroot, that's outrageous! It just goes to show how much markup people place on their work when they're putting the stuff together. I liken it to...

You would be better served with more blue light in the room for veg, the T5 will help with that a lot. You're losing a lot of efficiency right now

This thread has been an amazing source of information, I've been enjoying it over the past few days. I'm a fan of Newton's design on the Vinyl fence rail. I'm trying to figure out the best way to implement this as side lighting for an EFDL lamp, I like that design the most. I'm trying to...

Ah, Ok. I had just come to that post via search. I see that now. How do you feel about using LED for side supplemental lighting for that Indagrow? Would it be overkill, or could you perhaps fill in the blanks with what the IG is lacking with specifically targeted LED panels and really get a...

Are you running those A51s in your Veg space, I don't see them here. I was interested in doing an LED supplemented Induction grow, more than just the pontoons, but am unsure what to use to cover the footprint of the EFDL lamp.