COB Spectral Quality Thread

OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
Shugglet said:
So if you run the numbers it will put 70cri and 90cri ahead of 80cri in the 3000k bracket?



You think light quality is actually more important than light quantity. Every study ever says otherwise, so I dont know how much weight to give your opinion in a thread like this.
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you obviously know something..

you can contribute better if you make your own thread with mentioned tests...

unless you have nothing to show?

you are cluttlering this thread..

Megak is doing fine..on all fronts..
 
sixstring2112

sixstring2112

Well-Known Member
sixstring2112 said:
I would love to see any and all data on the cree cxb 3590 36v 2700k 80 cri in both 1050ma and 1400 ma
In my own garden these fuckerz are doin work!!!
You Boyz need to stop all the clutter, its a good topic for discussion and if killa wants to run all these numbers lets give him a break on all the jibber jabber please.
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just wanna make sure you didnt miss this post @MeGaKiLlErMaN bongsmilie (:
 
V

VegasWinner

Well-Known Member
F3 SPECTRUM • Best for germination through flowering

The workhorse and most popular spectrum from illumitex, F3 produces the fastest germination and drives the best vegetative and flowering results among all of the Surexi™ spectra options. In addition to the blue and red wavelengths, the F3 spectrum contains a small amount of green which is beneficial for the quality assessment of plants. The F3 spectrum is recommended for use in growth chambers as well as controlled environment agriculture operations of any size.

F3 wavelength distribution:
Blue (400-499nm) 11.0% / Green (500-599nm) 7.7% / Red (600-699nm) 81.0% / Far Red (700-780nm) 0.3%
http://illumitex.com/surexi
This is a great resource for color spectrum for horticulture

 
MeGaKiLlErMaN

MeGaKiLlErMaN

Well-Known Member
VegasWinner said:
F3 SPECTRUM • Best for germination through flowering

The workhorse and most popular spectrum from illumitex, F3 produces the fastest germination and drives the best vegetative and flowering results among all of the Surexi™ spectra options. In addition to the blue and red wavelengths, the F3 spectrum contains a small amount of green which is beneficial for the quality assessment of plants. The F3 spectrum is recommended for use in growth chambers as well as controlled environment agriculture operations of any size.

F3 wavelength distribution:
Blue (400-499nm) 11.0% / Green (500-599nm) 7.7% / Red (600-699nm) 81.0% / Far Red (700-780nm) 0.3%
http://illumitex.com/surexi
This is a great resource for color spectrum for horticulture

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I highly doubt that is the best spectrum. Since blurple had been found to not be that good over all. Sounds like a company making more false claims. Do you have proof that this is the best?
 
V

VegasWinner

Well-Known Member
MeGaKiLlErMaN said:
I highly doubt that is the best spectrum. Since blurple had been found to not be that good over all. Sounds like a company making more false claims. Do you have proof that this is the best?
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really NASA gets it wrong? full spectrum is the present and future here is a video
 
V

VegasWinner

Well-Known Member
MeGaKiLlErMaN said:
I highly doubt that is the best spectrum. Since blurple had been found to not be that good over all. Sounds like a company making more false claims. Do you have proof that this is the best?
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https://www.nasa.gov/centers/kennedy/home/plant_growth.html
Nasa research -
Gioia Massa, a NASA Postdoctoral Fellow in the Surface Systems group of Kennedy’s Engineering Directorate who works on this AES habitation-related project, said they looked at the responses of a red leaf lettuce called “Outredgeous” and radish plants to different light sources—broad spectrum fluorescent lighting and solid state red and blue LED lighting.

“LED lights are efficient and versatile,” Massa said. “Because of their durability and long life, they are ideal for space missions where resupply of things from Earth is limited.”

According to Dr. Ray Wheeler, lead for advanced life support activities in the Engineering Directorate, using LED lights to grow plants was an idea that originated with NASA as far back as the late 1980s.

Some of the first NASA-funded tests were done at the University of Wisconsin and at Kennedy using wheat and just red LEDs. Wheeler said the wheat plants were very leggy and almost bleached out.

“Blue LEDs weren’t very good back then, so using blue fluorescent lights helped correct those problems,” Wheeler said. “Today’s LEDs have vastly improved in their efficiency.”
 
MeGaKiLlErMaN

MeGaKiLlErMaN

Well-Known Member
VegasWinner said:
really NASA gets it wrong? full spectrum is the present and future here is a video
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In this case yes that guy isn't from nasa and is using the bottom end cobs from China. Blurple works fine for leafy greens but not for fruit in plants as they respond better to like around 4000-3000k not 5000+. So yeah this guy isn't providing information to this market. Blurple is great if you have super high efficientcy osram cobs and want to pay for it but it's not worth it at current prices.

Currently I'm around 15oz off my OG Kush under the cobs at 4000k, still have 3 more plants to trim and weigh that were also under it.

Edit nasa is doing if for the most useable plant light for low energy applications not for yeild per area maximized.
 
V

VegasWinner

Well-Known Member
MeGaKiLlErMaN said:
In this case yes that guy isn't from nasa and is using the bottom end cobs from China. Blurple works fine for leafy greens but not for fruit in plants as they respond better to like around 4000-3000k not 5000+. So yeah this guy isn't providing information to this market. Blurple is great if you have super high efficientcy osram cobs and want to pay for it but it's not worth it at current prices.

Currently I'm around 15oz off my OG Kush under the cobs at 4000k, still have 3 more plants to trim and weigh that were also under it.

Edit nasa is doing if for the most useable plant light for low energy applications not for yeild per area maximized.
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that is for educational there is a follow on that shows the outcome. The NASA study is printed and shows that reds and blues added to white is good.
 
V

VegasWinner

Well-Known Member
MeGaKiLlErMaN said:
In this case yes that guy isn't from nasa and is using the bottom end cobs from China. Blurple works fine for leafy greens but not for fruit in plants as they respond better to like around 4000-3000k not 5000+. So yeah this guy isn't providing information to this market. Blurple is great if you have super high efficientcy osram cobs and want to pay for it but it's not worth it at current prices.

Currently I'm around 15oz off my OG Kush under the cobs at 4000k, still have 3 more plants to trim and weigh that were also under it.

Edit nasa is doing if for the most useable plant light for low energy applications not for yeild per area maximized.
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Have you tried adding reds like Deep Red, Far Red and InfraRed during bloom? I have and it has shown improved production. just sharing
 
MeGaKiLlErMaN

MeGaKiLlErMaN

Well-Known Member
VegasWinner said:
Have you tried adding reds like Deep Red, Far Red and InfraRed during bloom? I have and it has shown improved production. just sharing
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I got cha and if people want to add to a spectrum that's fine, but to me it's not worth the hassle. If was to run say 50-400 W of red or blue in my room, why not just add another cob that I know will still push my yeild that much more? I'm sure there's more science in there but till that's completely figured out by someone smarter than me then I'll stick with cobs by themselves.
I'll work backwards from the best cobs that were ran soon enough to show why and if efficiency is as important as we think.
 
V

VegasWinner

Well-Known Member
Here is the ChilledLed grow light that Growmau5 tested and loved.
Her also has light engines or custom COB's with four channel control
 
V

VegasWinner

Well-Known Member
MeGaKiLlErMaN said:
I got cha and if people want to add to a spectrum that's fine, but to me it's not worth the hassle. If was to run say 50-400 W of red or blue in my room, why not just add another cob that I know will still push my yeild that much more? I'm sure there's more science in there but till that's completely figured out by someone smarter than me then I'll stick with cobs by themselves.
I'll work backwards from the best cobs that were ran soon enough to show why and if efficiency is as important as we think.
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They make a 50/100w full spectrum COB for $15/each http://www.ebay.com/itm/122046189206?_trksid=p2057872.m2749.l2649&var=421067408580&ssPageName=STRK:MEBIDX:IT
 
sixstring2112

sixstring2112

Well-Known Member
VegasWinner said:
Have you tried adding reds like Deep Red, Far Red and InfraRed during bloom? I have and it has shown improved production. just sharing
Click to expand...
Vegas can you elaborate more on this please,i have seen you mention it before.but have you done any side by sides? Like taking 400w of white cobs and put it up against 300w white cobs and 100w of far,deep,and infra red led? Using the same cuts and size space of course?
Other than people saying they cut down flower times i reallydon't see alot of hype with the use of far reds.and to cut down flower times or make plants "finish faster" did those people also lose yields because of the shortened growth period? Everyone wants more yield in a shorter timeframe lol
 
CobKits

CobKits

Well-Known Member
VegasWinner said:
F3 SPECTRUM • Best for germination through flowering

The workhorse and most popular spectrum from illumitex, F3 produces the fastest germination and drives the best vegetative and flowering results among all of the Surexi™ spectra options. In addition to the blue and red wavelengths, the F3 spectrum contains a small amount of green which is beneficial for the quality assessment of plants. The F3 spectrum is recommended for use in growth chambers as well as controlled environment agriculture operations of any size.

F3 wavelength distribution:
Blue (400-499nm) 11.0% / Green (500-599nm) 7.7% / Red (600-699nm) 81.0% / Far Red (700-780nm) 0.3%
http://illumitex.com/surexi
This is a great resource for color spectrum for horticulture

Click to expand...
thats really similar to the CLW solarsystem
 
MeGaKiLlErMaN

MeGaKiLlErMaN

Well-Known Member
VegasWinner said:
Here is the ChilledLed grow light that Growmau5 tested and loved.
Her also has light engines or custom COB's with four channel control
Click to expand...
Yah that's a good panel but it's only 400 W and kicks out a lot of heat. Yeah it got good g/W but if I could get the same g/W from cobs for cheaper and run twice as much wattage (still weighing) thenwhy would I consider them?
 
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