Need Help With Wavelength and Spectrum, LED...

[Weezard]

"What is your 635 to 660 ratio?"

I have the 635s and the 660s on separate arrays.
I use 4 different arrays for different stages of growth.
This is my flowering light
Attachment 285655
Uses all 660nm. for the 10 reds and 2 15W blues.
There's plenty of headroom so dimming the reds can give me more than enough relative blue to control stretch
Attachment 285656
As you can see, I ran my first flowering with the red turned all the way up.
This is how I learn.
Try stuff, an' see what happens.
(Most folks just call it havin' fun.)


Want pics of the other units?
Jus' click on my avatar, then click the more button on my albums.
Got some in "Let there be light".

Aglowha

Weeze

[warrior #113]

"What is your 635 to 660 ratio?"

I have the 635s and the 660s on separate arrays.
I use 4 different arrays for different stages of growth.
This is my flowering light
Attachment 285655
Uses all 660nm. for the 10 reds and 2 15W blues.
There's plenty of headroom so dimming the reds can give me more than enough relative blue to control stretch
Attachment 285656
As you can see, I ran my first flowering with the red turned all the way up.
This is how I learn.
Try stuff, an' see what happens.
(Most folks just call it havin' fun.)


Want pics of the other units?
Jus' click on my avatar, then click the more button on my albums.
Got some in "Let there be light".

Aglowha

Weeze

All the LED manufacturers are starting to put quite a bit more "white" leds into their "panels." Seems like a waste of money when you can add white with a ceramic metal halide. It seems like the trend of LED panels is going backwards and getting away from the whole red/blue original idea. Have you tried any other strains under your light and gotten as good results as before with just the red and blue combo?

What strains haven't worked well under your setup? I wonder if they could be trained to like all red and blue and learn to grow well without the white. Seems like a lot of people are under the idea that whites are necessary in a led light. Sure are a lot of mixed opinions out there, make me wonder which are actually tested and which are just people trying to sell their product.

You've obviously had no complaints about the dual wavelength spectrum, do you still charge the red and blue?

[Weezard]

All the LED manufacturers are starting to put quite a bit more "white" leds into their "panels." Seems like a waste of money when you can add white with a ceramic metal halide.

That was my take on it too.
If you want white light, CFLs are actually a more cost effective way to get it than LEDs.
More lumens per watt per buck.

It seems like the trend of LED panels is going backwards and getting away from the whole red/blue original idea. Have you tried any other strains under your light and gotten as good results as before with just the red and blue combo?

Yes, I have.
PokerFace is quite happy in purpleville.
White Widow loved her some leds.
Anesthesia, Herijuana, and Humboldt Purple grow well under red and blue too.

Gainesville Green?
Not so much.
However, Gainesville Green was not happy with fluorescent tubes either.
She wants full sun.



What strains haven't worked well under your setup? I wonder if they could be trained to like all red and blue and learn to grow well without the white.

Workin' on that.
Doin' my best to talk G. G. into playing nice with artificial lights of any kind.

Seems like a lot of people are under the idea that whites are necessary in a led light. Sure are a lot of mixed opinions out there, make me wonder which are actually tested and which are just people trying to sell their product.

On that, I lean towards cynical.
I do know one guy that tests everything, allatime.
That would be me.
Can't speak for da rest of 'em.

You've obviously had no complaints about the dual wavelength spectrum, do you still charge the red and blue?

Mmmm, now I wouldn't say that.
There are compromises.
A few of which I could be prompted to complain about.
But, yes I still use 2 colors.

Tried adding CFL white for the balky strains.
Made no discernible difference.
Neither did far-red, UVa, and/or UVb.
It's not a case of missing frequencies.
Seems to be about intensity.

I'm just scratching at the surface of all this.
My personal knowledge and resources are severely limited.
So, any solid information you can find and share will be put to good use.

Aloha,
Weezard