Ah cobs and quantums working in harmony. NiceHigh and welcome back Dan.
Good to see ya round these parts.
800w of Timber Crees and 500w of Quantums in a 4x8
Quantum Boards are essentially the same as COB'S. Except for the fact that they are spread out over a larger area to cover a large heat sink. The result. Quantum boards are too much like an LED box unit. With Quantum boards their is more cross lighting in the center causing the dreaded "hot in the center" problem. So the foot print is hot in the center and drops off as you move out to the edges. What they should do, is place less diode density in the center and increasing density as they move out toward the edges balancing out the foot print.
With COB's you can adjust them and balance them out to whatever shape you grow in.
I think you misunderstood something about COB vs Mid power diodes, with the COB's you can't avoid the hot spot, with mid power diodes you can, you're totally right about the HLG550 and the more diode dense boards being too concentrated when running at high power, but with DIY that can easily be dealt with.
No matter how you twist it, you get more photons per $ with mid power diodes than you get with COBs.
With the linear light strips made by Samsung you can DIY to your exact needs, and with the Q-series get the new and best diode on the market(Samsung LM301B), or with the F-series get the most diodes per $, and those use the second most efficient diodes on the market(LM561C)
The thing is that COB's have to be run at lower power(under 50%) to be efficient, where the boards/strips are better being run between 50% and 75% and stil more efficient than COB's running soft and a lot better spread.
Oooo how cryptic.
Dude, i dont know how I missed your lights after all this time. I have been thinking about building a cob rig for the past couple months I was thinking about mixing cobbs,and QBs. I have some many questions. It's like modern art.
Thanks Stltoed but mine is strictly qb's. 9 qb 120's that fills a 4x4 tent pretty damn well. I have it idling at 360 watts right now vegging my plants and I'm putting 1100 umols on the tops. It works for me and would do it again but I just don't have the time so just ordered today 2 HLG qb 260 kits. Let me know if you have any questions as I'm around and will help out wherever I can.
800w of Timber Crees and 500w of Quantums in a 4x8
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No problem with trying to catch up with my journal. I understand completely. just thought if you wanted more info on the lights you could find more there. But of you need anything just ask here I'll pop back to answer the best I can. I'm not trying to brag or anything like that I'm just trying to help people with the few things I know. Keep em green.Oh, okay, I didn't realize that. And, with so many light sources in one grow space, you're getting lots of "third-light effect" benefit.
I just visited it long enough to read the first post and oh man, lol, 1,089 posts - I'm already so far behind on the journals (, etc.) that I'm already trying to follow. I did read about the reason that you're growing - and you deserve a commendation for it.
Whoops, you have a newer journal than the one listed in your .SIG. And it "only" has 823 posts. That's still pretty daunting. Maybe I'll catch up with the ones I'm already subscribed to one of these days. If so, hopefully I'll remember to add yours to my list.
Best of luck with the grow (and the daughter
. But I know what you mean.
Yeh got to get my IT department (my daughter) on changing my Sig. She is in college and I don't like bothering her too much. I rather her head stay in her studies. She's a good kidHey, if you have something to brag about, that's not conceit, lol, that's just telling it like it is
BtW, tell your daughter that she forgot to update your .SIG (I did read that much) .
At this point in my life, I'm not really thinking about buying new lighting products (and don't have the ability to do so). I mainly read threads like this because... I've always been insatiably curious about new things, I suppose. And I like to learn about all kinds of stuff, from bleeding edge technology to how life may have began here ~3.8 billion years ago (which is pretty much the earliest it could have began, considering that whole heavy bombardment thing, and how it wasn't all that long before that that the planet was cooling off enough to have more or less a solid crust)... and everything in between - and beyond.
I read a lot, lol.
To answer your post above. Yes to everything.
It's your perception....AND my not so adequate camera.
