The ULTIMATE Flowering Spectrum

SupraSPL

SupraSPL

Well-Known Member
The 630nm and 660nm reds are now equal in radiometric efficiency. Yes you can use 630nm without 660 alone but KNNA warned against using 660nm with 630. I use them about 50/50. It makes sense to spread your SPD as much as possible in the red/deep red range.
 
S

SnotBoogie

Well-Known Member
For what it's worth, I ran 660nm LED with very little spread of other reds (only what some small CFL for side lighting gave out) with no "ill effects". Im sure growth couldve been faster but it was certainly not slow.

edit: in fact i actually ran nothing but a royal blue / deep red panel for 5 days with no ill effects either.
 
Fonzarelli

Fonzarelli

Active Member
PetFlora said:
From what I've learned, mmj benefits most in flower from 630-650 nm, wheras most mfgs make 660 the dominant nm. Here's my source...

over ~580nm or so (which has a Photosynthetic RS of over 90%!)
>
most of the ~660nm+ you actually need for photomorphogenesis - and you can get by with 630nm reds just fine.
>
(i.e. 630nm red is ~95% of the PSR of 660nm, AND they currently still have ~20-30% greater radiometric efficiency - as well as being cheaper than the deep reds - so there's more 'bang for the buck'):
Click to expand...
If this is true, then it seems like the 860w Allstart would be a much better flowering lamp than their 315w Agro which is specifically designed for flowering plants. The Agro was made with a large peak right at 660nm. So if what you are saying is true, and I don't doubt you at all, it would make Philips WRONG.
 
Fonzarelli

Fonzarelli

Active Member
SnotBoogie said:
For what it's worth, I ran 660nm LED with very little spread of other reds (only what some small CFL for side lighting gave out) with no "ill effects". Im sure growth couldve been faster but it was certainly not slow.

edit: in fact i actually ran nothing but a royal blue / deep red panel for 5 days with no ill effects either.
Click to expand...
1. Why did you only run it for 5 days?

2. Let's see some photos!
 
mamakush

mamakush

Active Member
Fonzarelli said:
I don't think you understood the statement. I didn't say it would temporarily lose vigor if switched to a higher quality spectrum. I said it will do better by NOT having to adjust to a higher quality spectrum. Therefore, you lose zero grow/flower time. Adding wavelengths that plants are already, by Nature are adapted to grow under will allow the plant to grow WITHOUT having to adapt. That's the whole point. The 630-670nm part of the spectrum is where ALL grow lights fail, except for a few new CMH lamps new to the industry. When you add this part of the spectrum to your grow, you see the plants take off as if on steroids, that is if everything else is dialed in correctly as well.
Click to expand...
You're right, I was thinking about the statement in a different way. Thanks for clarifying.
 
bicit

bicit

Well-Known Member
fonzarelli- What sort of background do you have? Can I PM you? I have some questions and I don't want to derail your thread.
 
Fonzarelli

Fonzarelli

Active Member
bicit said:
fonzarelli- What sort of background do you have? Can I PM you? I have some questions and I don't want to derail your thread.
Click to expand...
Background? Do you mean school? I have a degree in science and art. 20 years of gardening indoor/outdoor. 5 years of lighting research. PM is fine. Shoot!
 
Fonzarelli

Fonzarelli

Active Member
^^^Smells like sweet cherries^^^ I highly recommend this strain, but you gotta pop all the beans till you find that keeper plant.
 
You must log in or register to reply here.
Top