Best Led

Stephenj37826

Well-Known Member
View attachment 3982899
so what is this chart?
and can you give me answer about wich led/cob is the best right now?i wont to order theme this week

No that isn't the sphere data from chilled that is old estimates made by members before anyone sphere tested CX cobs period. Also be aware that chilled LEDs numbers from cxb3590 are a flash measurement cold. BIG Difference from actual under usage output..... That said Citizen 1812 or better and the vero 29 C Gen 7 are better than CXB 3590.... Also Luminous from cobkits are promising as well. All can be had cheaper than Cree at equal to or better performance.​
 

s0me0ne

Well-Known Member


No that isn't the sphere data from chilled that is old estimates made by members before anyone sphere tested CX cobs period. Also be aware that chilled LEDs numbers from cxb3590 are a flash measurement cold. BIG Difference from actual under usage output..... That said Citizen 1812 or better and the vero 29 C Gen 7 are better than CXB 3590.... Also Luminous from cobkits are promising as well. All can be had cheaper than Cree at equal to or better performance.​
look min 14:00
what can you say about it?
 

CobKits

Well-Known Member
cobkits.com

you can hit me up with questions at [email protected]

look min 14:00
what can you say about it?
i cant understand the guy but hes comparing a gen5 1818 3000k 80 cri vs a cree of unknown spec. is it 4000k 80cri? 3500k 70 cri? its hard to fraw any useful conclusions without knowing the ship he is using

if they were the same color the 1818 gen5 would be close to or just above the cree in efficiency
 

Mullumbimby

Well-Known Member
wiggle room? sorry im not the best in ensligh... :)
i still didn't decide it about the flowering time
i was thinking about giving 1 month to 2 4x4 so like ill have yield each month from 2 tents out of 4...
or to put theme all on the same time and to give 12h light to 2 tent and the other 2 in dark and then swap
it will depend on the cloning
i first wanted to put 4 600W HPS but i sew the amazing results of the cobs(grow mouse videos)
so those 400W can be used for ac or some more filters
so what do you think?im planing to get 0.5kg from each table is it possible with cobs?
or to keep the hps?
I'd say you need to get started and build up some experience of the whole vegging/flowering process. Growmau5 was a huge inspiration to me, and he's clearly an experienced and successful grower, but he didn't offer much regarding non-LED aspects of the whole process.
FWIW, my experience has let me to the point where I think that a single 4x4 can successfully veg more than enough plants to support 2x (4x4) in perpetual flower, and be harvesting half the plants from one of the 4x4s every 2 weeks. In my case, that's 2 plants (I'm using a 2x2 scrog over each single plant). I like a fairly long veg too.
The theory has a way of not translating directly to practice though, and working it out is part of the beauty of it. It's an art, not strictly a science.
I'm committed to LEDs, although for cold winters, there is still likely to be a place in my room for a 600HPS, just to keep up the temperature, without wasting energy on a heater.
Good luck and keep us up to date on your choices and progress.
 

Randomblame

Well-Known Member


No that isn't the sphere data from chilled that is old estimates made by members before anyone sphere tested CX cobs period. Also be aware that chilled LEDs numbers from cxb3590 are a flash measurement cold. BIG Difference from actual under usage output..... That said Citizen 1812 or better and the vero 29 C Gen 7 are better than CXB 3590.... Also Luminous from cobkits are promising as well. All can be had cheaper than Cree at equal to or better performance.​
Okay, thanks for the enlightment!
It's a screenie from their website, I believe from one of the videos.
But what I want to say is, the old charts are a bit to optimistic in terms of CXB effiency.
 
nobody has an actual measurement to back that number up but we do know relative performance from cob to cob in repeatable measurements.

you can buy cobs that are slightly more efficient than CXB at all currents for half the price (luminus cxm22, citi 1818 )

"If" the crees are 64% at chip level at that wattage "then" the other chips are 65-66%

you can also buy cobs that are even more efficient than CXB at about the same price (citizen 1825, vero 29C)

"If" the crees are 64% at chip level at that wattage "then" the other chips are 67-68% (but at higher currents they leave the crees in the dust by 10% or more

crees do well at low currents relative to their high current performance, but no better than other cheaper chips at low currents
So the Vero 29 C are better for me than the Vero 29 B? I have a 3x3 tent and I'm building a fixture with 9 COBs (3 rows of 3) and I planned on getting the C model and run them at 1400ma which powers them at 95w each but then I figured that was a bit too much heat so now I'm thinking of getting the B model running them at 1400ma which powers them at 70w. Is my logic flawed? Should I stick with the C model and power them at 1050ma (71w each) or even at 1400ma if I can keep the heat down?
 

verticalgrow

Well-Known Member
So the Vero 29 C are better for me than the Vero 29 B? I have a 3x3 tent and I'm building a fixture with 9 COBs (3 rows of 3) and I planned on getting the C model and run them at 1400ma which powers them at 95w each but then I figured that was a bit too much heat so now I'm thinking of getting the B model running them at 1400ma which powers them at 70w. Is my logic flawed? Should I stick with the C model and power them at 1050ma (71w each) or even at 1400ma if I can keep the heat down?
HEAT is HEAT Brah,:eyesmoke:
but running COBs soft = more light for that HEAT :fire:
 
Hi guys, new to LED's, wonder if anyone can help. I want to build a light for a 6x4 area with 11-1500 ppfd for high CO2 environment. Cree do a 72V 3590 COB, can i run 5 COBs on a 700ma Meanwell? I want to keep the amps down to the minimum whilst running the coolest but highest efficient setup, was thinking 4 drivers, 20 cobs. Is possible?
 
Hi guys, new to LED's, wonder if anyone can help. I want to build a light for a 6x4 area with 11-1500 ppfd for high CO2 environment. Cree do a 72V 3590 COB, can i run 5 COBs on a 700ma Meanwell? I want to keep the amps down to the minimum whilst running the coolest but highest efficient setup, was thinking 4 drivers, 20 cobs. Is possible?
 
H


No that isn't the sphere data from chilled that is old estimates made by members before anyone sphere tested CX cobs period. Also be aware that chilled LEDs numbers from cxb3590 are a flash measurement cold. BIG Difference from actual under usage output..... That said Citizen 1812 or better and the vero 29 C Gen 7 are better than CXB 3590.... Also Luminous from cobkits are promising as well. All can be had cheaper than Cree at equal to or better performance.​
Hi Stephen, can the 72V cobs, Cree and Vero be run on a 700ma driver?
 
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