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That is the reason, mate. Serioulsy, you are a fucking joke mate. Unbelievable. Straight to ignore, I can't take it anymore.

You have serious problems dude. Or you are trolling. But seeing how much time you spend with your posts, I tend to believe the first... The thing is: The absorptance spectrum of pigments in a solution is different compared to when the whole fucking plant works together. Is that so hard to...

Please check thermal conductivity of FR6 and aluminium.... FR6 is terrible.

Just a side note: QBs have an aluminium PCB and therefore a WAAAAYYYY lower thermal resistance compared to the FR6 PCB material they use for stripes. (Which becomes more important with increasing heat flux density/driving current) If LM561Cs would get overdriven that hard on a FR6 stripe, they...

Official Statement: http://ce.citizen.co.jp/up_img/news/pMgZjvc7Mmqs/20171110toe.pdf Interesting part: "To the extent confirmed so far, the products subject to the Improper Activities were primarily switch components, but some LED components etc. were also included. The identified time period of...

Jesus, they look good! Are these normal 3535 size? Will these already crush 70 % WPE @ 350mA?

Don't have much time today, therefore I cannot answer in depth. Please cite the source of your action/absorption spectrum as it does not come from Daughtry and Walthall or at least I cant find it there. I think your spectrum doesn't show the absorptance of a whole leaf and this is/was where the...

In these pics there are so many wasted photons, it makes me sad :D .

Yes, that is basically my point. You said that mainly blue and deep red get absorped and I think that is wrong. As the IC graph shows, nearly every wavelength gets absorped to a high degree. Weight the action spectrum with the absorption spectrum, then you know how useful a specific photon...

No no no... you need to get a refresh/ dig a little deeper when it comes to absorption. Cannabis specific absorption spectrum: https://www.icmag.com/ic/showthread.php?t=293045 Check out the other things this group posted. Well worth a read.

....cause they produce weed! WICKED!

Then tell us, how does it work in your world?

1) V22C 3000K leds from Bridgelux. Check digikey. 2) Because it is a lot more complicated than just buy a huge heatsink and call it a day. But yeah, watercooling has loads of advantages, the biggest is,that you can remove the heat outside of your tent (if you live in a warm climate!) 3) CRI 80 +...

What light source have you used before mate?

Could you post a macro shot of one of the LEDs, both colors if possible?

Well, then you already know what you need to know. Do you want more photons (grams!) or do you want to experiment with photomorphogenic effects? If grams then 660 nm, if photomorphogenic effects then far red LEDs. The DURIS S5 are not good in either one of this.

From a photosynthetic point of view, everything past 670nm is quickly becoming useless (https://en.wikipedia.org/wiki/Photosynthetically_active_radiation), therefore I would not recommend this LED for our purpose.

The human eye will perceive the LED as 620 nm because of its spectral sensitivity. Put the SPD and the spectral sensitivity curve of the human eye in one coordinate system and you'll probably see that both curves meet at 620 nm. https://en.wikipedia.org/wiki/Spectral_sensitivity EDIT: Ah well...

Read the datasheet.

https://www.digikey.com/product-detail/en/osram-opto-semiconductors-inc/GR-PSLR31.13-GTHP-R1R2-1/475-3227-1-ND/6569597