Sixstrings Led Cob Builds

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I was hoping you folks could point me in the right direction.

I have a 4x4x8 tent, and have been running 1k hps in a cool tube.

I'm building just for the flower room, so choosing 2700k.
Would 12 cxb3590's run at 1050ma be overkill? How much of a loss in performance would I see dropping to 10 in the same area?

If I went with the Vero29 series, which ones? I noticed they come in 70 CRI, any advantage over 80 for pure flower?

Thanks for filling this thread with great info!

I
 

CrimsonEcho

Self-Proclaimed Don Quixote
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I was hoping you folks could point me in the right direction.

I have a 4x4x8 tent, and have been running 1k hps in a cool tube.

I'm building just for the flower room, so choosing 2700k.
Would 12 cxb3590's run at 1050ma be overkill? How much of a loss in performance would I see dropping to 10 in the same area?

If I went with the Vero29 series, which ones? I noticed they come in 70 CRI, uany advantage over 80 for pure flower?

Thanks for filling this thread with great info!

I
To replace 1K hps 600-700w should do very well. It may provide a little boost too on the higher end. But are these 72v or 36v diodes. Depending on the answer, 10 will do the job with 1050ma.

Never used veros.

Cri is for human eyes and gives nothing about calculating how well a light source will perform when growing plants. You’ll need to look at the spectrum.

That being said 2700K is pretty red and usually with warm colours spectrum shifts to reds. Thus cri goes lower. Thats my understanding of the subject. So 70cri is probably ok but find a datasheet and control for yourself.
 
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One last question: can anyone tell me a qualitative or quantifiable difference in yield, with the same watts consumed per array, between Cree, Vero or Luminus?

When there is a $12/chip gap between Luminus and Cree, that adds up over time.
 
My 2cents....
Just finishing first grow for '19. 800 watts Cree CXB3590 COBs, 3000k. BOG Blue Kush 16 plants, 2gal pots, coco. JR Peters Jacks 321 hydro formula from cutting to harvest. As always beautiful, frosty, tight buds.
IMO, if one has the $$, go w/Cree.
Which ever one chooses LED COBs, QBs are the way to go. It's all goood!!!
Cheers.
Stay safe!!!
Success w/ya grow!!!
 
Hey @sixstring 2 Quick question I'm planning on ordering a set of both red and blues to throw between 2 sets of QB324 boards.

So it would be 4X QB324 @640watts
with 2 QB11 Red and 2 QB 11 Blue between them

What spread would you recommend 90 Degrees or 130 Degrees. This is for a 4x4 grow space, maybe stretched to 5x5 but I doubt it.

Also what Cob series do you currently recommend eg. CXA25xx or CXA3050 series

I might throw a few COBs in the mix as well just to really get that oomfph.

Also building a smaller light for Veg not sure what path I'm gonna go.
What did you end up doing for the QB 11's? Thinking about grabbing some of these and the QB 3's. The QB 11's are on sale for $25 from $49 which I think is a good deal. What are you using to power these suckers? I'm planning on having 2 sets of 2 QB 11's
 
I have really enjoyed reading this thread, lot's of ideas! Thank you to all who have contributed, I am sad to see that the postings on this thread have slowed way down. This is my third grow, indoors, and every time, like anybody with this as a hobby, I am constantly upgrading. It is because of threads like this one that led me to HLG and their Quantum Boards. I have four of the QB288 V2 triple combos. Two of the QB96 Elite V2 Engine's on a light mover. Those QB96's are f-ing bright. In second week of flower, stretch is starting to pick up. Things look good so far.
How you liking the QB 96? How much heat do they put off, by far the most reds in a puck i've seen but i'm also balling on a budget and was thinking about grabbing the saber 100
 
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Ok so i figured i would start a new journal here just for my led stuff since it has taken over about half my grow now lol.
I been using the info gained from supraspl,growmau5,tags420 (greengenes707) and northerngrowlights.com to build a bunch of diy cob light bars.also shout out to bobbyg who has answered alot of my silly questions as of late :)
These cree led are turning out some fanfuckintastic plants and i plan to move towards a grow room with 80% cob lights and 20% gavita fixtures with both mh and hps lamps to cover all the spectrum.
Anyhow heres a few pics to kick it off and now that winter is here i should have more time to document whats goin on.
View attachment 645429 View attachment 645430 View attachment 645431 View attachment 645432

Plus I'm trying to finish building my new spot, been a busy summer so this pretty much sat idle :(
View attachment 645434
What K are you using in your COBs? I've heard that 3500k will do it all but was wondering if a mix of dimmable 3500 and 3000 wouldn't be better. veg with the 3500s all the way up and then switch over to the 3000s up and the 3500 turned down.
 
What K are you using in your COBs? I've heard that 3500k will do it all but was wondering if a mix of dimmable 3500 and 3000 wouldn't be better. veg with the 3500s all the way up and then switch over to the 3000s up and the 3500 turned down.
Here's a few pics of recent grow...600watt rig (3'X3'), 3 200watt bars (4 Cree COBs CXB3590, 3500K oer bar), on a light mover coverings 4'x7' area. This setup works for both veg and flower...for me, that is. Always frosty, dense buds. When you find something that works, ya stick w/it til something better comes along...if it comes along, at all. I'm looking to adding a far red lights to my rig. I hear it's suppose to improve ones plants. We'll just have to see... Anyway, LED COBs, QBs, Pucks, Strips...are the way to go. Yeah, ya gotta spend $$...up front, but, seriously pays for itself. Success w/ya grows. Cheers.
 
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