This cob or that Quantum...

Both are excellent fixtures. The HLG600 does produce more photons for the same watts and I'd say it should have really decent uniformity. The Rapid fixture is about $250 more if you add the frame. If I was spending my $ on a quality plug-in fixture, the HLG would get a real close look.
 
Randodred said:
https://growerslights.com/products/horticulture-lighting-group-600h-quantum-board-led-kit?variant=6877581115420&utm_medium=cpc&utm_source=google&utm_campaign=Google Shopping&gclid=EAIaIQobChMIntOW08L02wIVSx6GCh1CxwNSEAQYASABEgKCmfD_BwE
The QB says ppf 1450 for 4×4 space



https://www.rapidled.com/cxb3590-4-x-4-led-grow-kit/

The cob says ppf 750 for 4×4 space.


I've heard that tha quantoum kit isn't as evenly distributed as the that cob kit

Any one know anything abt these lights
Click to expand...
It only makes sense boards give better SPREAD. But that doesn't make them the best option. Most people sure do like uniformity though....
 
Airwalker16 said:
Well it only makes sense. You have hundreds of light sources compared to "several".
Click to expand...
Not really. You have four boards that each effectively function as a single emitter (8x12) that are all placed very close together in a 29x15 frame. OTOH, you have 12 emitters spaced equally apart across a much larger area (42x40)

Cobs win in uniformity in this comparison.
 
Randodred said:
I thought the boards wld give better spread as well.
Click to expand...


Get just the boards, heatsinks and the driver and make your own frame.
Buy the parts directly from HLG. Each board can cover a 2x 2' area pretty well with just a bigger frame.
2020 alu profiles are pretty cheap or you use cheap L-channels to built the frame.
That's actually the only problem with HLG550 and 600.
A bigger one would have made the lights maybe more expensive, but is needed IMO.
With the stock frame you get too high center readings aka a hotspot. With a bigger frame it easy to solve this issue. @welight used a bigger frame for his solskin boards and got pretty even distribution across the area at 12-18".
 
OLD MOTHER SATIVA said:
..no lense no relfector cobs cover great,grow great and you can get pretty close without damaging them..
panels..are great too
Click to expand...
Yes kinda knew these were both great builds..
The QB has more umf... Jules and ppf etc.. with slightly more watts draw so idk..

I do want best coverage but at the same time the boards are more efficient... So equals out probably..
I think I'll check out the 600v2 for phew bills cheaper.. is there a discount code anyone knownof?
 
If you make your own frame to hold the boards in place you can cover a 4x 4' area pretty even. Gimme a few minutes, I'll look if I can find a PAR map.
 
This is the PAR map of 4 solskin boards mounted on a frame with 1 ft. spacings between the boards and 18" height.
Solskin boards use different diodes and so but in the end it's a board like the quantumboards.

4 Solskins on 4x 4', 1' spacings, 18inch height.jpg
Pretty sure with COB's you could get the same uniformity but you need at least 16 or more, incl. heatsink and so it's probably more costly, more wiring effort, more weight to bring to the ceiling and more expensive too.
If it was my decision, I would bet on 4 QB V2's(2 HLG260‘s) but on my own frame.
 
You can fully trust them! These boards are really top notch and +1,5g/w seems to be the rule, not an exception.
We have lots of QB related threads here in the LED section and in almost every thread yields were +1,5 - 1,7g/w and this with V1 boards! V2 is available since a few weeks now and you are in the lucky situation that you can buy the best of the best just from the beginning.
Get a few alu L-channels, cut them in lenght and do a 40x 40" frame and throw the boards on it. You'll never look back...
 
Randomblame said:
This is the PAR map of 4 solskin boards mounted on a frame with 1 ft. spacings between the boards and 18" height.
Solskin boards use different diodes and so but in the end it's a board like the quantumboards.

View attachment 4157185
Pretty sure with COB's you could get the same uniformity but you need at least 16 or more, incl. heatsink and so it's probably more costly, more wiring effort, more weight to bring to the ceiling and more expensive too.
If it was my decision, I would bet on 4 QB V2's(2 HLG260‘s) but on my own frame.
Click to expand...
So you aggree with four boards for my space..
I've got so much going one and I needed the light two weeks ago... So
Pree built kit or kit with frame is my thing.. ATM..
 
Randomblame said:
This is the PAR map of 4 solskin boards mounted on a frame with 1 ft. spacings between the boards and 18" height.
Solskin boards use different diodes and so but in the end it's a board like the quantumboards.

View attachment 4157185
Pretty sure with COB's you could get the same uniformity but you need at least 16 or more, incl. heatsink and so it's probably more costly, more wiring effort, more weight to bring to the ceiling and more expensive too.
If it was my decision, I would bet on 4 QB V2's(2 HLG260‘s) but on my own frame.
Click to expand...
Exactly. Building frame and spreading out the boards more best option.
 
Randomblame said:
You can fully trust them! These boards are really top notch and +1,5g/w seems to be the rule, not an exception.
We have lots of QB related threads here in the LED section and in almost every thread yields were +1,5 - 1,7g/w and this with V1 boards! V2 is available since a few weeks now and you are in the lucky situation that you can buy the best of the best just from the beginning.
Get a few alu L-channels, cut them in lenght and do a 40x 40" frame and throw the boards on it. You'll never look back...
Click to expand...
Same thing when ex hit door a few years back..haa
 
Randodred said:
So you aggree with four boards for my space..
I've got so much going one and I needed the light two weeks ago... So
Pree built kit or kit with frame is my thing.. ATM..
Click to expand...

Take two QB260 V2 kits, they come with the slate2 heatsinks and you only need two 40" L channels to create a nice frame with them. Or take them in parts, 4 boards, 4 slate1 heatsinks and one big HLG-480 driver if you want (or two smaller ones, HLG-240's) and you can make the frame like you want it. One thing with these boards is it is so easy that even a child can put it together.
 
Randomblame said:
Take two QB260 V2 kits, they come with the slate2 heatsinks and you only need two 40" L channels to create a nice frame with them. Or take them in parts, 4 boards, 4 slate1 heatsinks and one big HLG-480 driver if you want (or two smaller ones, HLG-240's) and you can make the frame like you want it. One thing with these boards is it is so easy that even a child can put it together.
Click to expand...
Im looking at the 260 xl v2 kits
But I dont wanna build it this time I will have it pre essembled and tested

Nott.sure.if the.ppf.or.whatever.is same.or.better.than. the hlg 600 thou

Doesnt.really.say.on 260 kits.But does on the 600.
 
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