420nm vs 440nm, debate continues....

NWbordergrower91

NWbordergrower91

Member
Trying to decide on using a 420nm star, or 440nm star. The 440's are much much much easier to find, and I even found a triple diode on 1 star, which you can pick for each diode (I would do 2 deep reds, to 1 420nm UV). Currently I'm running 4 cxb3590s at 200w total, along with my Area 51 150w (had to start somewhere right?), with deep red stars, and IR for initiators.

I know that the plant will do better at a true 420nm, but if I can't seem track one down, would 440nm really make all the difference?
 
NWbordergrower91

NWbordergrower91

Member
alesh said:
It's a wonderful statement. May I ask how do you know it?
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All the information I can find on it points to 420nm, theres a few videos on youtube as well that explains, in detail, why plants absorb and utilize certain nutrients/energy/light at certain ranges. Seems like 420, 530, 660, and 730 are your 4 basic "measurements". Still learning myself
 
Positivity

Positivity

Well-Known Member
NWbordergrower91 said:
All the information I can find on it points to 420nm, theres a few videos on youtube as well that explains, in detail, why plants absorb and utilize certain nutrients/energy/light at certain ranges. Seems like 420, 530, 660, and 730 are your 4 basic "measurements". Still learning myself
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Any links to those videos? Sounds interesting..
 
NWbordergrower91

NWbordergrower91

Member
On my way out the door to class, otherwise I would be more than happy to. My best advice is look around on here, youtube, just google UV for cannabis, or even easier "420nm for cannabis". A lot of what you will find is generally based on plants in general, as far as what spectrum they want. Remember, half the reason we go LED is to target specific wavelengths the plant can utilize.

Two things two remember though with using 420nm, better node stacking during flower (as long as in a correct ratio with deep red 660nm), and more trichome production. Biggest thing to remember, is just because you SEE more trichomes, does NOT mean it is a higher thc rating or potency. There is a possibility for this, but a lot of people claim using 420nm is just for increasing potency by 5%. I call bull

Friend of mine has been growing the same 4 strains for over 5 years now, and the frostiest, stickiest, and one of the tastiest hes grown in that time, just so happens to be the lowest THC rating of the 4. Just food for thought.
 
NWbordergrower91

NWbordergrower91

Member
Positivity said:
Any links to those videos? Sounds interesting..
Click to expand...
sorry, mis-posted.

On my way out the door to class, otherwise I would be more than happy to. My best advice is look around on here, youtube, just google UV for cannabis, or even easier "420nm for cannabis". A lot of what you will find is generally based on plants in general, as far as what spectrum they want. Remember, half the reason we go LED is to target specific wavelengths the plant can utilize.

Two things two remember though with using 420nm, better node stacking during flower (as long as in a correct ratio with deep red 660nm), and more trichome production. Biggest thing to remember, is just because you SEE more trichomes, does NOT mean it is a higher thc rating or potency. There is a possibility for this, but a lot of people claim using 420nm is just for increasing potency by 5%. I call bull

Friend of mine has been growing the same 4 strains for over 5 years now, and the frostiest, stickiest, and one of the tastiest hes grown in that time, just so happens to be the lowest THC rating of the 4. Just food for thought.
 
Positivity

Positivity

Well-Known Member
NWbordergrower91 said:
On my way out the door to class, otherwise I would be more than happy to. My best advice is look around on here, youtube, just google UV for cannabis, or even easier "420nm for cannabis". A lot of what you will find is generally based on plants in general, as far as what spectrum they want. Remember, half the reason we go LED is to target specific wavelengths the plant can utilize.

Two things two remember though with using 420nm, better node stacking during flower (as long as in a correct ratio with deep red 660nm), and more trichome production. Biggest thing to remember, is just because you SEE more trichomes, does NOT mean it is a higher thc rating or potency. There is a possibility for this, but a lot of people claim using 420nm is just for increasing potency by 5%. I call bull

Friend of mine has been growing the same 4 strains for over 5 years now, and the frostiest, stickiest, and one of the tastiest hes grown in that time, just so happens to be the lowest THC rating of the 4. Just food for thought.
Click to expand...
Was more interested in the specific videos you liked. When you have time, no worries.

Any pictures of lights? grows? So we can see how the 420nm/660nm stacks nodes and increases trichomes...

You can check my thread Diy led grow for about 2 years of steady grows using monos and cobs
 
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