Quote Originally Posted by Weezard
I wouldn't call green "worthless".
It's just low efficacy.
Takes a lot more of it to do the job.

I just use two wavelengths, red and blue.
Most strains do quite well with that.

I have played with other wavelengths, but for energy efficiency, I've settled on 635/660nm. red and 460nm. blue.
I use a dimmer to vary the ration of red to blue to control morphology.
2 colors will usually do.
Try it, I think you will like it.

If your strains abstain, throw some white light at them to see if they still complain.



Aloha,
Weeze
Hey Weez,

What is your 635 to 660 ratio? As in for every 635nm Led, how many 660nm Leds to you use?

I just added some 625nm Red to my Led fixture to boost that Quantum Yield theory.