Which bar lights emit the least heat?

Comparing spectrums, below is what I see. Also, six 66" Fluence Rays = 720 W.
That's another thing, most of these units are for a 4' x 4' space. A 5.5'-long light is just, I've grown attached to it.

Fluence



680W LED Grow Light System w/iLoc | Phantom Photobio MX



Icarus Li2 + Vert (Bios)

Im liking fluence myself. The board bar hybrid lights look like the newest type of light out. Please let me know if you stay with fluence or find something new. Would love to see what you come up with in end. Sure its going to do very well. Best of luck.

Ok, my 3rd and final suggestion. To be honest i'm not exactly sure what you're looking for because i'm a noob, but i would really like to help you out, so i'll just throw this one more and then i'm off. Sorry if i'm not helping and i wish you the best of luck.


This seems like my dream light and one day i will get it for sure!
High power, high efficiency, great coverage, triple dimmer to control all the spectrums (white, blue, red, uv, ir), Samsung diodes, Meanwell driver,10 years of warranty, decent price.. Seems like a great quality if i'm not mistaken. Mr.Autoflower on youtube offers discounts as well.

With this light you should be able to set the exact spectrum you like at any given moment.
The only thing that may be an issue, the dimmer for the red spectrum also controls the UV and IR, so if i understand correctly they are always turned on together.

But if you really like the Fluence, by all means go for it and if it's proven to you, then you won't regret it. My motto is: 'Don't change what already works perfectly'

Astral22 said:

Ok, my 3rd and final suggestion. To be honest i'm not exactly sure what you're looking for because i'm a noob, but i would really like to help you out, so i'll just throw this one more and then i'm off. Sorry if i'm not helping and i wish you the best of luck.

Slim 720S - Dimmable LED Grow Light - 720w (Triple Dimmer) 3500K (UV/IR) LH351H v2 - 5x5

USA Orders - 2-4 day delivery International - 2-5 day delivery Slim 720S Preview - January 1st, 2022 Release Date [email protected]

opticled.com

(Sold Out) Slim 650S - Dimmable LED Grow Light - 650w (Triple Dimmer) 3500K (UV/IR) LH351H v2

Click the "Watch On Youtube"link to watch 650 Watt Dimmable LED Grow Light USA Orders: Slim 650S NextGen is now available Europe & UK Orders: 3-7 Day Delivery Canada & Japan Orders: 3-7 Day Delivery

opticled.com

This seems like my dream light and one day i will get it for sure!
High power, high efficiency, great coverage, triple dimmer to control all the spectrums (white, blue, red, uv, ir), Samsung diodes, Meanwell driver,10 years of warranty, decent price.. Seems like a great quality if i'm not mistaken. Mr.Autoflower on youtube offers discounts as well.

With this light you should be able to set the exact spectrum you like at any given moment.
The only thing that may be an issue, the dimmer for the red spectrum also controls the UV and IR, so if i understand correctly they are always turned on together.

But if you really like the Fluence, by all means go for it and if it's proven to you, then you won't regret it. My motto is: 'Don't change what already works perfectly'

Click to expand...

Thanks!

Grabbed spectrum graphs from your links, primary factor I'm using along with some other suggestions in this thread.

I'd put all the graphs in one comment but, eventually, we lose the ability to edit an old comment.

https://opticled.com/collections/slim-series/products/slim-650s-dimmable-led-grow-light-650w-triple-dimmer-3500k-uv-ir-lh351h-v2 and
https://opticled.com/collections/slim-series/products/slim-650s-dimmable-led-grow-light-650w-triple-dimmer-3500k-uv-ir-lh351h-v2, I grabbed this

Astral22 said:

I think Migro Aray should run cool. The driver is placed outside as well. He also recommends a pretty low positioning, 7'' or 18cm

From Migro website:

Driver and Lamp operating temperature

Both the led bar heatsink and led driver both operate at about 25 deg. C or 45 F above ambient temperature. So at 25 degrees C or 77 F room temp the driver and heatsink will be about 50 deg. C or 122 F. This is perfectly normal and safe.

Click to expand...

Thanks.

Quick comparisons. PAR Range, usable PPF.

Fluence's indoor spectrum appears to beat out all PAR Ranges.
While other suggestions appear to have a higher efficacy value the Migro Aray 4 has a lower efficacy than the 66" Ray (though Migro probably beats the 22 and 44" Fluence Rays).

Thanks! Once growers suggest what runs coolest, I can just compare them with the 66" Fluence Ray (at least the factors I care most about besides length).

Astral22 said:

I searched for some keywords such as ''led grow light vertical farming racks'' and i found hundreds of pages, but they are all unknown lights to me at least. And most of them seem industrial/commercial, with no price for a single product, only asking for a quota for wholesale business i guess.

Are you looking for something like this maybe?

MechaTronix - LED Grow Light Products

MechaTronix has developed a comprehensive range of advanced LED grow lights for top lighting in indoor cultivation and greenhouses, interlighting for high wire crops, supplemental lighting for vertical greenhouse farming and top-notch vertical farming grow lights.

www.horti-growlight.com

Full Spectrum LED Grow Lights: Types of Grow Light Panel, Tube for Sale | EnliteHorti

EnliteHorti provides a full line of energy-efficient custom led grow lights for indoor plant growing solutions. Our professional led grow lights help saving more electricity cost and getting high-quality yields with high intensity, high output, high power, and high-quality features. Get a free...

www.enlitehorti.com

Vertical Farming — PRONORO

Greenhouse, indoor, vertical farm horticulture light. HarveLite LED grow light. Horticulture lights indoor greenhouse grow lights. Vertical farm cultivation lights. CC RACK leafy green, medical cannabis, lettuce. LED GROW LIGHTS. High light efficiency. Hight PPF output. PPFD for grow stages from clo

www.harvelite.com

Our Company - SpecGrade LED

SpecGrade LED is a manufacturer leader of horticultural, commercial, and industrial LED lighting.

specgradeled.com

Click to expand...

Thanks! Note "greenhouse" and "indoor" LEDs are separated by a comma.
From what I can tell, there appears to be a difference between indoor-specific and greenhouse-specific LEDs (e.g., PAR range, efficacy).
Looks like greenhouse-specific have a less impressive PAR range, though their efficacy value is likely higher.

What would you say about the Kind LED X series lights?

windycheese said:

What would you say about the Kind LED X series lights?

Click to expand...

First, hilarious name/meme coordination. Well-done.



Kind LED X series
observations:
- heavy compared to Fluence 66" Ray
- PAR range doesn't seem as complete as the indoor spec Ray.
- it's not a bar. looks like it's supposed to be hung like much higher than a bar (~6" v. 24-36"). Not sure -- all things considered, it doesn't look that close a comparison. Just my opinion based on not much, fwiw.

Apostatize said:

First, hilarious name/meme coordination. Well-done.

View attachment 5064915

Kind LED X series
observations:
- heavy compared to Fluence 66" Ray
- PAR range doesn't seem as complete as the indoor spec Ray.
- it's not a bar. looks like it's supposed to be hung like much higher than a bar (~6" v. 24-36"). Not sure -- all things considered, it doesn't look that close a comparison. Just my opinion based on not much, fwiw.

View attachment 5064916

View attachment 5064926

View attachment 5064927

Click to expand...

These numbers seem way too low, my homemade led has an even light spread of 750-800 par@ 28", even in the corners(reflective walls)

Markshomegrown said:

These numbers seem way too low, my homemade led has an even light spread of 750-800 par@ 28", even in the corners(reflective walls)

Click to expand...

too low to be good or too low to be accurate for that brand/product? that's what they advertise on their own website, not a 3rd-party. But I agree with you, it's too low/uneven.

Apostatize said:

too low to be good or too low to be accurate for that brand/product? that's what they advertise on their own website, not a 3rd-party. But I agree with you.

Click to expand...

All the canopy, every ft2 needs to have a par reading between 500 and 850 or it's a waste of time.

PJ Diaz said:

Some people understand elementary physics, others understand proper word usage; a few understand both.

Click to expand...

Most people that understand basic physics already know proper grammar though, lol.

OneHitDone said:

Li2

Engineered for maximum output, the Li2 is a powerhouse 800W LED grow light for indoor cannabis.

bioslighting.com

Multi-Bar LED Systems | PHOTOBIO

The latest technology for the serious horticultural professional looking to increase business sustainability by reducing power consumption while simultaneously improving crop performance and yield.

www.phantombio.com

Click to expand...

Trying to find that second light but having no luck... And these babies aren't cheap!!!

Apostatize said:

First, hilarious name/meme coordination. Well-done.

View attachment 5064915

Kind LED X series
observations:
- heavy compared to Fluence 66" Ray
- PAR range doesn't seem as complete as the indoor spec Ray.
- it's not a bar. looks like it's supposed to be hung like much higher than a bar (~6" v. 24-36"). Not sure -- all things considered, it doesn't look that close a comparison. Just my opinion based on not much, fwiw.

View attachment 5064916

View attachment 5064926

View attachment 5064927

Click to expand...

Heh, thanks!

I should have clarified. I meant the Kind Led x220/x330/x420. How do you compare those to systems like the Icarus Li2 and Migro Aray?

windycheese said:

Heh, thanks!

I should have clarified. I meant the Kind Led x220/x330/x420. How do you compare those to systems like the Icarus Li2 and Migro Aray?

Click to expand...

Fluence 66" Ray is close to 1lb per 120 W. Kind LED is 15lbs/420 W.
Lifetime is about the same.
But 5.5' long beats 4'.
So, you're arguably going to save $$ with a Kind LED X420, depending on space and whether you decide to supplement UV/far-red to match Fluence's sole-source spectrum.

X420's efficacy (whichever one is shown below) is ~0.1 better than 66" Fluence Ray. But often, greenhouse-specific lights have > efficacy than an indoor spec ... but indoor spec probably has broader PAR range.

Looking at X420's par range, it doesn't quite match the UV and Far-red sections of the Fluence indoor spectrum. If that's important to you, you'd need to supplement it unless you purchased a "sole-source" light like the Fluence Ray Indoor Spectrum. X420's PAR range looks like it might peak higher in red but not far-red. And Fluence looks fuller in the oranges and blue areas. But Fluence blasts that same indoor spectrum in veg and bloom -- no adjusting, just dimming.

Personally, I run veg-dedicated and bloom-dedicated grow areas. So, all those knobs and adjustments would be pointless for me. Look at grower's photos of their buds. Some look awesome, yield's great, but there's just something lacking in aesthetics/complexity of the bud structure. Then look at the PAR spectrum and efficacy for their lights. As we gain experience growing, we learn to make finer distinctions. Real connoisseur shit. I don't know, I'm going to stop and consider those things when they mention what they used and show bud pics ... instead of just oggling their plants or busting their chops?

x420, https://www.kindledgrowlights.com/products/x420



X420 spectrums component-wise. Standard spectrum v. Kind spectrum (veg and flower).

Frank Nitty said:

Trying to find that second light but having no luck... And these babies aren't cheap!!!

Click to expand...

OneHitDone said:

(OUT OF STOCK - VERSION 2.0 ARRIVES IN FEBRUARY!) Phantom PHOTOBIO MX 680W LED Fixture - S4 Spectrum + iLOC On-Board Dimming (with 10ft 110-120V Cord CHE1063010W)

The PHOTOBIO•MX changes everything. We took a step back, evaluated all the fixtures on the market, and then set out to do things entirely different. The result is a 680W fixture delivering 15% more light to your canopy, using 35% less power than a 1000W DE fixture. Increase yields while driving...

growgreenmi.com

Click to expand...

My man!!!

760 bucks!!! Dammit,Jim!!! I like it though!!! For almost 800 dollars it had better earn it's keep!!!

What the hell, I'm buying one of these!!!