White Light LED and addition of Red and Blue light on plant response

Lot of discussion of white light leds cob's, versus adding additional red's and blues.

Kind LED

PAR readings

Nova L:ED

Lush vs Kind

Black Dog vs. Kind

These are a range of Industry standard grow lights available over the last two years to date.

Please note all are compared by PAR and light spectrum.

How does your light measure up, using this same test and measurement?

Fluence BML vs Kind LED

California :Light Works

PlatinumLED Grow Lights P300 vs Kind L300 vs Mars Hydro vs Amare vs GalaxyHydro - 5 way comparison

These tests are bogus. Check out some real tests of that Kind crap and you'll find they only produce around 1.3umol/J. Don't fall for the misinformation/lies that manufacturers put out there to sell their overpriced crap.

Unless these companies have changed their business strategies, they use older gen tech or lower bins, generally cheaper less efficient parts. They use gimmicks as a sales tactic, some may have some merit but are usually implemented with cheap parts.

captainmorgan said:

Unless these companies have changed their business strategies, they use older gen tech or lower bins, generally cheaper less efficient parts. They use gimmicks as a sales tactic, some may have some merit but are usually implemented with cheap parts.

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WOW. Nice response to actual testing with PAR and Spectrum Analyzer, called facts.

fluence bioengenering
spydr xplus !!!!!

PAR meters and Spectral Analyzers don't measure the quality of the parts and build quality. I've never said a white LED can't be improved by tweaking the spectrum by adding mono's, I've been doing it for years. what is at question is ratios and benefits verses the complexity and cost.

I have fairly offered testing of all the major lights by one supplier, Kind Led being fair using same equipment and test conditions. I would offer anyone arguing with facts has some issues and it is not me or the facts. In fact chilledgrowlights.com even sent cree cxb3590 3500k off for the same tests and his results are not acceptable either.

If you have a problem with facts and the fact that all the major grow light companies focus on three things, light quality, ;light quantity, and light intensity. Par and spectrum analysis are the two methods to measure those three factors fairly and allows comparison equally for all lights.

Nothing wrong with cob lights,I have some myself. I have cree cob's cxa, cxb, 3500k, 5000k, 36v and 72v and various mono's in various colors by cree .Nothing wrong with that. no need to defend it as equal to or better than commercial grow lights.

I also have Diamond xl350 and full spectrum cob fixtures, as well. I do not limit myself.

My plan is to build a true commercial fixture that is light on the power, and heavy on the production.

Personal experience, I find vegging plants produce some really lovely healthy thick and dark green leaves with the addition of a blurple.
I like to think that might stock my clones up with nutritious leaves (which they sometimes re-absorb from the bottom up as they root).
I use a white cob and a blurple for my mother.
Both cheapies off ebay, E27 sockets.

captainmorgan said:

PAR meters and Spectral Analyzers don't measure the quality of the parts and build quality. I've never said a white LED can't be improved by tweaking the spectrum by adding mono's, I've been doing it for years. what is at question is ratios and benefits verses the complexity and cost.

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You can not continue to play the cheap diode game any longer. That is a red herring. Chinese production is across the board improved or your ;lights would be crappy, as well. Al from the same city and maybe even the same factory. you do not even know. PAR and Spectrum Analysis places all players on equal playing field. Quality of parts will show during testing,a s well as quality of testing. Most every company I posted has a QC program, UL listed, as well as other requirements.

Nothing wrong with what you are doing, but that does not make them wrong either with what they are doing. The question still is while claims are made, how many have submitted their lights for PAR and Spectrum Analysis testing, as well as UL and other QC issues? Probably not, and that is OK too. That is what DIY is. DIY is NOT saying the experts get it wrong and they cheat and use cheap parts. They are experts because they have made the commitment to testing and inspection, the core requirements for any production company for public consumption.

learning from the experts is how DIY improves not becomes cheap parts and cheap labor. you can not tweak parts and labor with PAR meters and spectral analysis together.

You may have NOT said COB's can't be improved, but I would suggest you read responses from others on that same subject matter.

I am not here to fight, but I am not taking the bad treatment any longer. ALL opinions are equal until proven otherwise. I live by that people here should try that same.

What I am doing is fine for me. Because you do not agree with what I am doping, does not make it right or wrong, it just means you do not understand what I am doing, and that is neither right or wrong either. it is what it is. But I have not attacked anyone over anything. I am just resolute in my views and understanding of lighting and it's impact on plant growth and development until facts prove otherwise. So far facts have been helping me move forward. I share facts but that hurts some folks. sorry.

Your preaching to the choir when it comes to playing with spectrum, I started by mixing specialty T5 bulbs with cheap LEDs. I go by what I see in the garden and raw numbers don't always tell that story. Some changes to spectrum make very small differences and others large. Combine that with different genetics,environment,grow style and skill of the gardener and it all becomes quite complex. A completely computerized adjustable spectrum using mono's sounds wonderful but what about complexity,cost,efficiency and quality.