How si this spectrum?
- Thread starter trueg115
- Start date
Beefbisquit
Well-Known Member
Too much red, IMO.
It doesn't take many red LED's to give you a huge spike. I'd use x9-10 white and x5-6 red.
x3 2700k
x3 6000k
x3 4000k (if they have them, or something else Neutral white)
x3 630nm
x3 660nm
It doesn't take many red LED's to give you a huge spike. I'd use x9-10 white and x5-6 red.
x3 2700k
x3 6000k
x3 4000k (if they have them, or something else Neutral white)
x3 630nm
x3 660nm
puffenuff
Well-Known Member
That's a good question. The way I look at it, there are at least 3 benefits to incorporating more white leds:
1. A more natural color making it easier on the eyes and to gauge deficincies
2. Broad spectrum coverage
3. Can replace the need for blue leds if done right
So I think the better question, and the one I've been tossing around my mind is:
How much white is too much?
At some point, probably depending on what kelvin you choose, you start to overload on certain less important wavelengths which id imagine will cause a loss in efficiency.
Im not pretending to have any answers, just brainstorming. Everyone has their own preference, and really, its just a matter of trial and error.
Good luck, let us know what you decide to go with.
1. A more natural color making it easier on the eyes and to gauge deficincies
2. Broad spectrum coverage
3. Can replace the need for blue leds if done right
So I think the better question, and the one I've been tossing around my mind is:
How much white is too much?
At some point, probably depending on what kelvin you choose, you start to overload on certain less important wavelengths which id imagine will cause a loss in efficiency.
Im not pretending to have any answers, just brainstorming. Everyone has their own preference, and really, its just a matter of trial and error.
Good luck, let us know what you decide to go with.
trueg115
Well-Known Member
Good response for that so far, looking forward to beef's response as well.
I take it that with the added white this LED will be much better in the veg growth as well, I was originally going to use it for flowering, but come to think of it if the white supplies the needed blue light with better full spectrum then it wouldnt hurt to use it for veg as well.
And as far as spectral wise I will look into it
I take it that with the added white this LED will be much better in the veg growth as well, I was originally going to use it for flowering, but come to think of it if the white supplies the needed blue light with better full spectrum then it wouldnt hurt to use it for veg as well.
And as far as spectral wise I will look into it
PetFlora
Well-Known Member
All that mmj needs is NW and WW that have 80+ CRI + high PPFD
http://en.wikipedia.org/wiki/Photosynthetically_active_radiation
http://en.wikipedia.org/wiki/Photosynthetically_active_radiation
trueg115
Well-Known Member
Sorry, let me rephrase that. The ones I last posted are the spectrums from which I am able to choose from, not my choices I have selected. After further research I now see why white is optimal in comparison to blue alone.
Thanks for the help on that, what spectrum of white would you recommend petflora? As in the amount of NW and WW?
As far as the light in its entirety, i am planning on 3x 660 and 3x 630 and leaving the other 9 for a mix of WW and NW
Thanks for the help on that, what spectrum of white would you recommend petflora? As in the amount of NW and WW?
As far as the light in its entirety, i am planning on 3x 660 and 3x 630 and leaving the other 9 for a mix of WW and NW
Personally I would dump the whites, get some Actinics, some UVB and some FR with T5s. Proven mass market price effective technology that provides enough wide spectrum including green to keep the plants happy. When LEDs get cheap/efficient enough then I would consider LED whites.
sorry for commiting heresy, I actually do use and like LEDs but I'm finding combos to be more efficient dollar wise at the moment.
Chronikool
Well-Known Member
I would get 1 cool white 5500-6000k and 7-8 warm white 2700-3000k, 4 red 660nm and 1-2 red 630-640nm
FranJan
Well-Known Member
+1 for some 12000-14000Ks. Depending on their output they should cover your 435nm area and maybe your 450-460 area. Be wary of WWs since their output is usually much lower than other colors/whites. They're great and all but need to be more carefully selected otherwise their output will not be the same as your CWs or blues, rendering them kind of useless. I know cause I've been there.
And be careful of PetFlora's advice because if you don't get the right type if white diodes you'll end up with a panel that will stretch the shit out of your plants. Actually I'm of the opinion that NWs should be omitted. Way too much green, (no Pet you don't need green to grow marijuana), and their peaks are usually less than stellar. But that's just my 2 cents. Oh and if you don't go with WWs you may want to get some 730nm or some kind of FR in there to speed things along in flowering.
And be careful of PetFlora's advice because if you don't get the right type if white diodes you'll end up with a panel that will stretch the shit out of your plants. Actually I'm of the opinion that NWs should be omitted. Way too much green, (no Pet you don't need green to grow marijuana), and their peaks are usually less than stellar. But that's just my 2 cents. Oh and if you don't go with WWs you may want to get some 730nm or some kind of FR in there to speed things along in flowering.
PetFlora
Well-Known Member
It is amazing how many opposing views with leds spectrums/diodes. This is my first grow using BrandX seeds. For the first 7 weeks only NW + WW (3000K= more blue) + 5000K. Second full week supplementing with a ufo 90 (R/B) Plants are now 9 weeks from cracking. The owner says they are right on schedule. Will be posting new pics this morning
PetFlora
Well-Known Member
That's a total of 15 diodes
You can accomplish as much, or more, with 3 NW & 7 WW, although upping them to 12 WW + 3 NW would provide better PPFD
Here's a few pics taken this morning. They were vegged with ~ 40w NW & WW.
Again, it's not that what you are thinking of doing won't work, it's just that whites do it in a much broader sense
View attachment 2569856View attachment 2569857View attachment 2569858
You can accomplish as much, or more, with 3 NW & 7 WW, although upping them to 12 WW + 3 NW would provide better PPFD
Here's a few pics taken this morning. They were vegged with ~ 40w NW & WW.
Again, it's not that what you are thinking of doing won't work, it's just that whites do it in a much broader sense
View attachment 2569856View attachment 2569857View attachment 2569858
trueg115
Well-Known Member
I should add that this will be a supplemental light as well, to a 400 watt hps/mh (depending on if vegging or flowering)
So far I am considering goign with a broad spectrum just to make sure not to miss anything, although out of the suggested spectrums so far I like beef's suggestion as it contains the broadest.
Thank you so much for your suggestions btw guys, it helps a lot.
So far I am considering goign with a broad spectrum just to make sure not to miss anything, although out of the suggested spectrums so far I like beef's suggestion as it contains the broadest.
Thank you so much for your suggestions btw guys, it helps a lot.
Beefbisquit
Well-Known Member
That might even be a tad too much red - especially if it's supplemental.
x1 2700k
x5 6000k
x3 4000k (if they have them, or something else Neutral white)
x3 630nm
x3 660nm
That will give you more blue light as HPS already has quite a bit of orange/red light.
x1 2700k
x5 6000k
x3 4000k (if they have them, or something else Neutral white)
x3 630nm
x3 660nm
That will give you more blue light as HPS already has quite a bit of orange/red light.
Slipon
Well-Known Member
I just ordered a 8 spot Fero light (much similar to the Apollo I believe)
and I ask em to mix em to suit flowering
this was what they suggested:
1x620
2x630
4x640
4x660
1x700
1x455
2x6500K
in total 15x3W in each of them 8 spots
hope this will work replacing my HPS for flowering
and I ask em to mix em to suit flowering
this was what they suggested:
1x620
2x630
4x640
4x660
1x700
1x455
2x6500K
in total 15x3W in each of them 8 spots
hope this will work replacing my HPS for flowering