Quote Originally Posted by FERMENTATION
No. I am thinking of the wavelength measurement of nanometers. I will take your example of a 635nm LED. Now this LED is sold as 635nm. Is 635nm it's median wavelegth? Does it for instance product light in the 630nm and 640nm range? I am not in any way refering to the lumen output which is a useless measurement as far as plants are concerned.
Hey Fermentation...

Dude, I'm in a hurry, so I'll reply more appropiately later...

But yeah, when I contacted the company, the guy gave me the specs for their LEDs... and there's the central nm, and a "range" of wavelengths that the LED also produced... so you're right.

I'll write what happened with the custom setup later...

BTW: LOL!!!!
"Ferment... Now damnit!"
lol lol