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Since you've got way more cobs than you need for that area, and you've already got them mounted and the fixtures made, why not just run them at ~25w (6 per driver) they get really efficient at that range (the same as running an 1825 at 50w) the total amount of light would be more than enough for...

But I don't think you can max out a driver unless you're using it near its voltage limit. So how many of those drivers do you have at present?

Ok, well looks like I was off-base, that these can go that much lower. Its just that you can only limit them to 43v, so you don't have the built-in protection you would have with the 36A or 42A. Just curious, how many cobs were you going to run per driver? Because your driver isn't the...

I don't think you grasp how these things work. Constant Current drivers are hooked up in series with the cobs. Constant Voltage drivers are hooked up in parallel with the cobs. The driver you show in the picture is a Constant Voltage driver. How hard your cobs are driven when it is undimmed...

Hey bud, don't get down on yourself :) The fact that you completed your first grow and actually have something worth smoking is commendable. My first grow was awful, and I would have given anything to have done as well as you. A lot of people on these forums are bullshitters. If you follow...

So you bought 48v drivers? Those are 36v cobs. Those drivers have adjustable voltage, but only go down to about 43v, so they'll burn out those cobs as soon as they're powered up.

I've seen you mention this sort of thing before, as if PPF were a spot measurement. There is no such thing as "PPF in the middle" :) PPF cannot be measured at any one spot, its not stronger in one area than another...it is simply the total amount of photons (in the PAR range) produced by a...

Its not that hard to do what you are talking about. You need to wire up a sub-panel with a couple of breakers in it. You'd be dividing your 240v line into 2x 120v circuits with several outlets on each. You mount the whole thing on a piece of plywood. You could incorporate a heavy duty timer...

Could you expand a bit on this please? What did you notice that was different than what was grown under the other cobs. Thanks :)

I know right? Whoever heard of a square UFO? That thing will never fly.

So @Growmau5 mentioned on the roundup this past Friday that he got a kickass harvest with his ChilLED, it may have beat his Canopy10. I imagine he'll make a video about it soon.

Now that I look closer, I think you're right, it appears that the high cri canopies are thicker (not just seeing increased inter-nodal spacing). Also the 3500k appears to have wider leaves than the rest. We need higher resolution. @Rahz, I hate to be a PITA, but at some point could you take...

I love that there's a 3000k 70, 80, and 90 cri in this. You can certainly see the extra stretch in the 90.

So any updates on this for us? Is there a phase 2 planned (or even underway)? Thank you btw for the work you put into this.

OK, I guess I'm behind the times. Rahz took a bunch of par readings comparing different temperatures and 70-80-90 cri for the 1825 in this thread which i somehow missed: https://www.rollitup.org/t/cri-test-and-mcree-weighted-results.919923/ What's nice is that he also weights the measurements...

But are those par numbers the result of measurements of cobs of various color temperatures and cri, or did the person who built the spreadsheet just take the lumen numbers supplied by the manufacturer and apply the standard led adjustment (which does not take account the spectrum, color...

I applaud you for the work that you went to detailing this side-by-side. The only thing is, I have no way of knowing if the differences in the 2 sides were due to color temperature or cri. I suspect that the color temp may have had more to do with the slight difference in how the plants grew...

Any chance you could produce some par measurements, 80 cri vs 90 cri for the same series cob. I don't think I've ever seen that posted here anywhere, All we've got to go on is how many lumens each produce which is meaningless. You've got the li-cor and you stock the chips....so.... :)

Growmau5 is also building one with uvb on youtube, if you're into diy

WOULD EVERYBODY PLEASE STOP REPLYING TO YODAWEED. Its not him that's ruining threads, its all you people who keep arguing with him. He is a troll. In every thread he finds some idiotic thing to argue about for pages and pages. You are not going to convince him of anything. Ever. That is...