Does anyone have any info or experience with this unit.

Rapid LED CXB3590 5' X 5' LED Grow Kit

12 - Cree 75W Cobs, 900W total.

Looks good, but no info.

Well it depends on the price. 3 maybe 4 years ago those were all the rage. Those specific cob fixtures at the time were the best on the market. Then quantum boards and led strip lighting became more popular and efficient. I believe those are somewhere around 2 or 2.1 on efficiency if I remember right and some of the new fixtures are 2.7. So really it comes down wether you want the newest tech and the price of that fixture. If the price has come down significantly from previous years I’m sure it would still be worth getting it just won’t be quite as efficient. I’ve seen some really nice grows with those cobs before.

Sorry didn’t realize that was a link at the top and I thought it was good deal at first but by the time you add the canopy substrate and reflectors it’s 900 dollars. Then you still have to build and not sure about warranty on a kit.

where as you can buy a growers choice 720 for 900 or less if you shop around. Or many of the other strip fixtures that people use, that one just came to mind because of price, and I know a store in Michigan with them in stockthat I believes ships if your out of state for great prices.

Apalchen said:

Sorry didn’t realize that was a link at the top and I thought it was good deal at first but by the time you add the canopy substrate and reflectors it’s 900 dollars. Then you still have to build and not sure about warranty on a kit.

where as you can buy a growers choice 720 for 900 or less if you shop around. Or many of the other strip fixtures that people use, that one just came to mind because of price, and I know a store in Michigan with them in stockthat I believes ships if your out of state for great prices.

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Thanks, I am venturing into a new realm of growing, new tent, 5 x 5, and have been running two 315W CMH's, not enough to cover a 5 x 5. So I have been looking into the new LED lines. Just so uneducated on them.

gr865 said:

uneducated on them.

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There are a lot of different lights all running the same parts. But remember customer service is worth some extra money when it comes to equipment that might break and cost so much.

I just bought the gavita 1930e, I don’t recommend them for a tent grow though. I like gavita because I trust the quality and warranty. But they are bit overpriced. But if your realized that light was 900 dollars after adding the needed accessories and were prepared to drop that then the gavita 1700 can be had for close to that price and it uses the same diodes and parts as all the other strip lights yet it has over 3000 chips. Where as most of them have 2000-2500 if I’m not mistaken.

that being said there are all kinda lights with similar output for a few hundred less. Growers choice 720 can be had from 8-900 depending where you are.Growers choice 680 can be had for 675 -800 depending where you are as well. Loriflux 8 bar is really nice and works great for 875 a fixute. Mejiuu or something like that from Alibabamakes a really nice light as well and can be had for 600 dollars but if you need the warranty they are clear in China and shipping is from there not a us warehouse so will take longer. Then that coco for cannabis link above test a lot of the cheaper fixtures available but that still use good parts. Synce led if your a real tech nerd looks to be one of the coolest and most programmable lights.

In my case I chose to pay more for the gavita because it made sense in my garden and I trust my store to get me a replacement ASAP if something happens. Also it’s one of the few leds using a lens instead of conformal coating. I saw a video on YouTube where a guy got a light with conformal coating dirty on purpose and tried to wash it off it’s kinda a sticky coating so it won’t wash off well. But who knows maybe since it’s water proof coating you could get it clean with a damp rag or something. But I figured if I’m spending 10k on lights I want them to last as long as possible.

Great info!
This post is also very informative, if you have not already read it.
https://www.rollitup.org/t/the-chinese-quantum-board-knock-off-builds.971560/post-16404122

gr865 said:

Rapid LED CXB3590 5' X 5' LED Grow Kit

12 - Cree 75W Cobs, 900W total.

Looks good, but no info.



View attachment 4934043

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Several things make me wanna skip that: cree cobs are not nr one in efficiency, they were supposed to be a few years ago but real life test found them not be up to spec, lower output and efficiency. Also cree ccb is a bad choice for high output. Bridge lux Vero or Luminous would be better bets.

No real point in reflectors on cobs, they don't improve light intensity if you take into account higher hanging height. They eat output.

Cobs in general seems like a bum deal, but a lot of growers favors them. Timber does cob fixtures and are sponsors here.

Rocket Soul said:

Several things make me wanna skip that: cree cobs are not nr one in efficiency, they were supposed to be a few years ago but real life test found them not be up to spec, lower output and efficiency. Also cree ccb is a bad choice for high output. Bridge lux Vero or Luminous would be better bets.

No real point in reflectors on cobs, they don't improve light intensity if you take into account higher hanging height. They eat output.

Cobs in general seems like a bum deal, but a lot of growers favors them. Timber does cob fixtures and are sponsors here.

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Do you have those results?

It's on chilleds website (see below) and on cobkits thread; you know the deal, look thru it yourself if you wanna know.




Should come out as around 63% efficient at .7A according to the number crunchers of back in the day, hitting 52% in the sphere.

I have 2 and love them

I have a diy 8 cob light I made in 2016.. Might not be as efficient but it still grows...

After talking to my friend on this site, can't use his name as I have not got his permission to do so, he suggested I talk to the owner of an LED company.
I called, he is a busy man, and he finely got back to me. We discussed cob's vs LED's and @Rocket Soul he is correct that the cob's are not as efficient. Since I first made this post I have been binging on educating myself on LED's, I know a lot more now, can't build one, LOL, but at least am not as dumb as I was.
So I am looking at a number of manufactures and comparing the different units.
I am also checking out the customer support when I call the companies.

Rocket Soul said:

It's on chilleds website (see below) and on cobkits thread; you know the deal, look thru it yourself if you wanna know.

Lab Test Report: Cree XLamp CXB3590 3500K CD Bin

Photon Flux Test Report Test results reported for: Horticultural integrating sphere testing Samples Covered in Report: 1 Orb Optronix report: CHIH002-011 Original issue date: November 18, 2016 Revision Issue Date: November 21, 2016 Image of device under test -01 Spectral radiant flux measured in...

chilledgrowlights.com

Should come out as around 63% efficient at .7A according to the number crunchers of back in the day, hitting 52% in the sphere.

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Cool thanks.

But as far as not lining up...it lines up perfectly with CXB3590 CB 3500K specs according to cree. 60C tc lines up perfectly. No Tc temps given for the testing so can only guess based on common sinks of the day, ambient temps, and the current/power. Maybe a RIU'ers attempt to make up unknown data for 700ma. But lines up perfectly with what cree put out for its "current range". Just saying, maybe you look through it...


EDIT:
No idea how anyone would even think that given the data actually presented at 1400ma. Cutting current in half is alway 6-8% increase. Always has been, and still is.
So to extrapolate off of 1400ma to 700ma...*1.07= expected.
At 25Tc that would be ~56% at best.
at 60Tc its ~52%...just what it tested out at in that test.

I never made these calculations, they were touted around based on the then datasheets were cree looked the best. Point is cree cxb tested lower, even on soft current which was supposed to be it's strength, than Veros and citizen cobs of similar or less price. Again, cobkits thread.
I've seen the cree product tool but never done the cxbs, only mid powers.

Rocket Soul said:

I never made these calculations, they were touted around based on the then datasheets were cree looked the best. Point is cree cxb tested lower, even on soft current which was supposed to be it's strength, than Veros and citizen cobs of similar or less price. Again, cobkits thread.
I've seen the cree product tool but never done the cxbs, only mid powers.

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But you are making claims based on them. That is on you.
You are completely incorrect and I already showed that. Why do you not actually look at the test and the data sheets yourself? As well as the PCT I linked for you? It's all right there for you or anyone. Always has been the whole time even in 2015/16.
It tests exactly how it should have test, and the results show that clearly without question.

Anyways, I like others agree, strips and spread PCBs with more efficient LEDs are a more efficient solution for him getting into it. And even a better cost value too. But there are hundreds of ways to show that or even COB values without using false info about a certain brand/product. Just saying.

Have a great day!

Well, I have boiled it down to three units. Hope to make the decision this weekend.

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HLG SCORPION RSPEC







HLG 600 RSPEC®






Growers Choice ROI-E720

HippieDudeRon said:

But you are making claims based on them. That is on you.
You are completely incorrect and I already showed that. Why do you not actually look at the test and the data sheets yourself? As well as the PCT I linked for you? It's all right there for you or anyone. Always has been the whole time even in 2015/16.
It tests exactly how it should have test, and the results show that clearly without question.

Anyways, I like others agree, strips and spread PCBs with more efficient LEDs are a more efficient solution for him getting into it. And even a better cost value too. But there are hundreds of ways to show that or even COB values without using false info about a certain brand/product. Just saying.

Have a great day!

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Hundreds of ways? Post up just 12 please.

MidnightSun72 said:

Hundreds of ways? Post up just 12 please.

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1)Efficacy (umols/w)
2)Value (umol/$)
3)Heat sinking
4)Weight
5)Driver/power cost per same photon count
6)Uniformity
7)Mixed SPDs
8 ) LM80
9)TM21 reports
10)Harsh environment resistance
11)Extra comopent cost(holders, adapters, and whatnot)
12) Lower component operating temps...longevity

gr865 said:

Well, I have boiled it down to three units. Hope to make the decision this weekend.

• 
  

HLG SCORPION RSPEC




View attachment 4935058
View attachment 4935060

HLG 600 RSPEC®



View attachment 4935070
View attachment 4935071

Growers Choice ROI-E720

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How are you going to be running it? What is your setup/style?

Without know that I would say the Scorpion, then a toss up between the GC and older respec based on how your running it and sale prices.