the best led lighting to grow

xtsho

Well-Known Member
[QUOTE = "Sinfor, publication: 16696679, member: 982101"]
A study conducted on rose ant tomato crops?
You're running out of arguments
[/APPOINTMENT]
https://www.alchimiaweb.com/blog/luz-verde-cultivo-cannabis/ green does not produce anything in the cannabis plant, nothing or nothing! I have 100,000 more links
The only thing you have is a credibility problem. You should probably be spending your time learning how to grow decent cannabis instead of that nasty larfy stuff you seem to be proud of. But here you are pushing junk science and trying to sell those crappy $1200 grow boxes.
 

Sinfor

Well-Known Member

Dorian2

Well-Known Member
Los vendedores chinos en otros foros justifican la presencia de verde y amarillo en sus lámparas, porque según ellos "el verde ayuda a que el resto de la luz penetre más en el dosel", que también es otra mentira sin base científica. Al ver que nadie ha sido capaz de dar un argumento real, simplemente reírse y decir "qué mierda", deja en claro el bajo nivel de la mayoría de los cultivadores que están hablando aquí. Compare un coche chino con un Mercedes Benz alemán, déjeme reírme un rato, ya vuelvo.
Wir würden uns freuen, wenn Sie Ihre Beiträge für diejenigen von uns übersetzen würden, die Ihre Muttersprache nicht sprechen?

Danke. Ficknut
 

MyBallzItch

Well-Known Member
Lol stop hating guys!

OP, tell us more about these magic lights man. WilI I be able to grow say... About a pound?
 

Budzbuddha

Well-Known Member
Ok … I think i can break the language barrier …..


“ Caca nacho pee pee tu madre pinche joto aye curumba ? “
” Del taco culo frito corn cheeps ? “

*cat helped me translate
 

Rocket Soul

Well-Known Member
[QUOTE = "Rocket Soul, publicación: 16696587, miembro: 930560"]
Cita fuentes por favor, no se si sabes pero esto es colmo de bro-science. Por esto la gente se tira en tu contra. Si tienes alguna fuente si se puede considerar, si no; pues lo siento pero has hecho caso al bro equivocado. Con amor y respeto, aunque dudo que cambies de opinion; que no suele pasar en el internet.:)

Edit: si las plantas no usan amarillo y verde en flora, como es que el sodio flora bien cuando la gran mayoria de su luz es amarillos y verdes?
View attachment 5046328
[/CITA]
bang!!
Bang!
So in order to prove that chinese light sellers are full of shit advice you quote... another light seller that sells blurple lights? Whats the actual difference here, other than china and phillips?
The point your making is that green and yellow doesnt have any effect on cannabis in flower. The study mentioned (but i cant see it actually quoted anywhere in the article) talks about the color green penetrating in the cannopy and uses a spectrometer for measuring. Now how do you measure photosynthesis normally? Which color is the photosynthesis, especifically the photosynthesis of green and yellow? How can you believe this proves your point?

Also, the study isnt even right. Theres an assumption made regarding higher levels of green light deep in the cannopy is due to reflections from the other leaves. Now i cant actually say too much about this study as its not mentioned by name or link (afaik) but you could actually get much more reliable results regarding penetration if you removed the leaves reflecting this supposed green light. Guess what, someone already did those tests here on the forum, ill drop in the info below as it is one of my favorite posts on riu. Youve not shown any info on green yellow photosynthesis. Youve shown that you will not accept the words from light sellers, until you actually do. So Holland light makers are ok but chinese are liars. Well, actually both are somewhat liars. The study in the article is never properly quoted so this is basicly just "oh, its like this cause i know".
The only thing youve actually proved is that lighting companies from the entire world will try to make their product look great, no matter what.

And now on to the study and why it doesnt make sense. @Malocan was the first active user i saw here on riu with a decent spectrometer, and he was asked by forumers to put the spectrometer behind a leaf, so that he could measure what little light came out the other side. This was repeated with 2 and even more leafs. What light was left after passing thru the leaves should then be indicative about what colors penetrate and what is easiest to absorb. But since there is no other leaves around (spectrometer pushed towards the bottom leaf in the bunch) you eliminate any of this hypothetical reflected light that the phillips article quote. The results:
wihout-leaf.png
No leaf, 3500k


with-leaf.png
One leaf. Notice the deep dip around 680, and how far red and green is much higher than previosly. Blue is also very low indicating easy absorbtion.


with-leaf2.png
2 leaves, pretty similar but even more exaggerated.

with-leaf3.png
3 leaves. Here we see something relatively new, green is now much lower than far red but still much higher than red/blue. If green wasnt absorbed by the leaf, where did it go? What happened to it?

with-leaf4.png
4 leaves: same as the last one, hardly anything left but some green and far red.
What has been shown: green penetrates deeper into cannopy, or really thru leaves.
Red and blue are the most accessible colors to the plant. But as we can see that the plant does absorb green and yellow we can fairly safely say that it is to some extent photosynthesized.
Original post and thread https://www.rollitup.org/t/spectral-lightmeter-gigahertz-optik-msc15.913239/post-12727580

Now lets see your 10000 links. Or even one which actually argues your point convincingly.

I have no qualms with your plants they look fine. 2 per watt is excellent results but 35g per square foot is fairly midling. Growers around here tend to wait until 2 ounces/56grams per foot before they go bragging. The hest ive seen personally (not online) is about 700 per meter (square meter, not a 4x4/120 tent) which works out as 60 per foot.
 
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Hiphophippo

Well-Known Member
I just use the hlg rspec lights they are proven great quality lights 0AA20AC5-A425-4E82-B3B2-C7DF1920E61E.jpeg
This is from a few grows ago picked a little bit early had some spacing issues but this is under 650 rspec from hlg at 30 inches away from canopy
 

Rocket Soul

Well-Known Member
[QUOTE = "Sinfor, publicación: 16696679, miembro: 982101"]
¿Un estudio realizado en cultivos de tomate hormiga rosa?
Te estás quedando sin argumentos
[/CITA]
https://www.alchimiaweb.com/blog/luz-verde-cultivo-cannabis/ el verde no produce nada en la planta de cannabis, nothing or nothing! tengo 100.000 enlaces más
Dude that is literally another libk to someone selling something, in this case green lights for night time work in the grow room. The statement:
" En efecto, las plantas parecen no tener fotoreceptores para la luz verde, no pueden absorberla, por lo que una iluminación de éste color no perturba su periodo nocturno y no estresa a las plantas causando los síntomas indeseables que hemos visto."

"It seems like the plants have no fotoreceptor for green.... Etc etc"
Seems? And nothing more to back up? Then assuming cause it wont break day/night cycle then the plant cant notice it, at all.
When there is actual science on green, both as a PAR light showing actual proof of chemical reactions (increase CO2 due to sugar being created), and as having its own photomorphogenic effect (green reaction: more fibrous growth, decreased transpiration= correct intracannopy behaviour). So the plant will actually see green, its just that the night/day mode is controlled by red and far red.

It seems a bit dumb to quote this as evidence
 

cobshopgrow

Well-Known Member
There are more components than just diodes and it's a guarantee that some of the components are made in China. And I think you mean SMT "Surface Mount Technology" not SMD.

I also don't see how posting pictures of early harvested weed full of brown leaves makes a case for anything. If you're trying to make a case for made in Europe the closest you get is assembled in Europe using non-Chinese diodes. The examples of plants you posted don't prove the light is better.
i agree that the plants dont look very healthy and that his light will use still many components made in china with resources from whatever, but well using the term SMD is fine in this regard.

"SMD assembly SMD stands for surface-mounted-device. By their connecting surfaces the SMD-components are soldered directly on a PCB. "

the only truth in his post it seems.
 

Rocket Soul

Well-Known Member
clear language.

above the leaf.
View attachment 5046527
View attachment 5046528
just some chinese, korean, whatever 3200k 80cri leds.

below the leaf.
View attachment 5046529
View attachment 5046530
Its remarkably similar to Malocans results. Also worth noting is that these are relative and not absolute measurements; even though the green peak is now prominent we can still deduce that some green light has been absorbed as the ppfd drops by a factor of around 20; there is no real arguing that this is all the leftover light that the plant simply rejected as there would have to be much more green if it just bounced off the plant.
 

Rocket Soul

Well-Known Member
And also...

Bang!


Both general and Cannabis specific info, lots of info on green and the tldr is that green is used in photosynthesis but not as well as blue or red and it depends on how strong the light is, and it is "sensed" by the plant as it has its own reaction to green. Reasearch paper and not a marketing sheet.

Bang!
 

hotrodharley

Well-Known Member
WRONG …. Plants have 2 pigments that will utilize green / green-yellow although to much lower degree . Both Phytochrome and Cryptochrome use it for flowering , photosynthesis and other plant processes … ….. White light is made up of red , blue AND GREEN .


Nice try tho
People should definitely watch the videos about light spectrum and LED on YouTube by Dr Bruce Bugbee. Stops the bullshit. And we learn the above about white light is true. And how light from the furthest ends of the spectrum are basically useless.
 

xtsho

Well-Known Member
i agree that the plants dont look very healthy and that his light will use still many components made in china with resources from whatever, but well using the term SMD is fine in this regard.

"SMD assembly SMD stands for surface-mounted-device. By their connecting surfaces the SMD-components are soldered directly on a PCB. "

the only truth in his post it seems.
Well I stand corrected. However I do think that SMT is the more common reference to components mounted on the surface of a PCB board.

As far as the lighting equipment they're trying to promote as non-Chinese, there's Chinese parts.
 
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