i'm so friggn ****
Prolight Opto
puff puff puff
and toss this in incase noone else has
High Power and Cluster LED Light Bulbs, Prolight 1W, 3W, 5W LED Emitters
now where was I ???
oh time go look at the sexy girls

__________________
Compassionate Use Act of 1996 Prop 215 is State Law
Federal Law for the Masses
Federally Decriminalize Marijuana know support bill H.R. 5842
Federally Decriminalize Marijuana know support bill H.R. 5843

is this the elusive 450nm blue.... oh royal blue
http://www.prolightopto.com/datashee...-5LDS_v2.6.pdf
min 445 nm Typ 455 nm Max 460 nm
almost lost that link a few times too baked night all
ProLight Opto

__________________
Compassionate Use Act of 1996 Prop 215 is State Law
Federal Law for the Masses
Federally Decriminalize Marijuana know support bill H.R. 5842
Federally Decriminalize Marijuana know support bill H.R. 5843

Ya lots of people have seen these. Gonna use the luxeon rebels. Even though they have lower output, they are very cheap (around $2.00) and 5 of them would replace a 10W LED output.

The 620nm 3W is inefficient compared to the luxeon rebels. The prolight 3W makes about 100lm, and 1 2.5W makes 85lm (or 450mW) for only $2.67, about half the prolight.

The 465nm-470nm might be useful since we are trying to get close to the 470nm peak. A 15W LedEngin 465nm makes 200lm of light (4000mW), but for $35.65. If the prolights are about $4 a piece then we could buy 10 for the price of one 15W (but thats also 9 more LEDs you have to hookup and hope dont short).

the besthongkong.com prolights are expensive compared to LedEngin LEDs. $12.30 for 30lm of 470nm, if we used just those for the 465-470nm then we could have to buy 7 to get the same output as the LedEngin (200lm).


Those clusters are white light, virtually useless compared to correct wavelengths. you are just wasting your money if you spend it on that. The 5W blue prolights are about $12, and they only produce 50lm, so you would have to buy 4 of those to match the LedEngin 15W (and 4 of the prolights would be 20W total).

Look at the charts of cannibis absorbtion (look up near the top of the page for the charts posted by Opie). 450nm is in the "death zone" as Opie would call it. They would help, but would be inefficient.

Awesome man!

I'm pretty sure I've asked before, but does anybody know what's required to work with those "Star Package" LEDs? Can you just epoxy them to an aluminum heatsink and hand wire them to an LED driver? Definitely not the prettiest solution, but it might work.

Reflectors and Optics on the LEDs aren't required, they can just help make the light more directional. The Procyon 100's use Cree X-Lamps with no additional optics, if I recall correctly.

correct gil...they have some bulbs angled...and the glass under the LEDs is minimally shaped to disperse the light

WT

__________________
Your style will eventually match your grow area and the amount of time and money you like to put into initial setup vs. long term maintenance.-stinkyattic
"Boy, the next words outta your mouth better be some brilliant Mark Twain shit...cause it is definitely getting chiseled on your tombstone"-Otis Driftwood
LED growing- An instructional grow log
Episode 3...Revenge of the LED

Wooh 8 pages!!

I'm looking at the absorption chart, and the combined absorption for all pigments line shows absorption at 450nm to be quite high, more than 75%. 425nm would be better, but 450nm should work quite well going by the chart.

What am I missing?

Your not missing anything. 450nm is quite high on absorbtion, but if you look at each pigment by itself you see that 450 is not at their peak. the peaks look to be 440nm, 470nm, and about 480nm. Like I said 450 can and probably will help, I hope you can see that 420, 440, 470 and 480 would be even better (and more efficient) than 450 alone

Im thinkin 470 might be all we need....for ours
8 pages!!....WOOHOOO!!!!...lol

everyone rate this thread so it goes to the top of the list with the other good ones....(heh)..!!!!


whiskeytango

__________________
Your style will eventually match your grow area and the amount of time and money you like to put into initial setup vs. long term maintenance.-stinkyattic
"Boy, the next words outta your mouth better be some brilliant Mark Twain shit...cause it is definitely getting chiseled on your tombstone"-Otis Driftwood
LED growing- An instructional grow log
Episode 3...Revenge of the LED

On the graph it shows 420nm being near 100% absorbtion. Even though none of the individual pigments show any peaks at 420. So I imagine that having the peak absorbtion supplied will cause ever greater absorbtion (around 98-99%) which is what we are looking for.

Good idea SnS, rating the thread. Don't know why it hasn't been rated up already, its a pretty awesome thread if you ask me.

I see! That suggests an interesting experiment to do, although it would be difficult to set up.

Compare yields from plants grown under identical conditions and Identical calculated amounts of Photosynthetically Active Radiation, with the only difference being:

Group A - Using light selected to hit all absorption peaks
Group B - Using light with just 425nm and 665nm, the two aggregate peaks.

well...we are pretty much group B right now....lol
whiskeytango

__________________
Your style will eventually match your grow area and the amount of time and money you like to put into initial setup vs. long term maintenance.-stinkyattic
"Boy, the next words outta your mouth better be some brilliant Mark Twain shit...cause it is definitely getting chiseled on your tombstone"-Otis Driftwood
LED growing- An instructional grow log
Episode 3...Revenge of the LED

It wouldn't be too hard. The hardest thing would be to wire up all the LEDs.

Well then theoretically the plants should be the same. Photosynthetic Active Radiation (PAR) accounts for the different wavelengths. It doesn't matter if you provide 23uE/s/m^2 of 660nm light or 10uE/s/m^2 of 660nm light and 13uE/s/m^2 of 420nm light. Either way both cases has the same photosynthetic energy reaching it, and theoretically the plants should be the same. What we are trying to do is provide more efficient PAR, meaning providing less power to the LEDs to create the same amount of PAR. We do this by finding the wavelengths (note that its plural) where the absorption is the greatest, so more of the energy from the LEDs is transfered to energy for the plant, or PAR.

Ok so what does everyone think of these ratios?
Vegetation Flowering
420-5%----420-1%
440-15%---440-2%
460-5%---460-6%
465-35%---465-7%
530-5%----530-4%
590-5%----590-5%
625-5%--- 625-10%
645-10%---645-20%
660-10%---660-40%
735-5%----735-5%
6:2.5 B:R----7:1.6 R:B

This is where I am currently stopped since I can not create an array without a ratio. I think this is pretty good but just want to make sure I didn't skip any important pigment or misplace any percentages. Also...do you think we could get away without the 440 even though it is a peak for chlorophyll a and the carotenoids? I am asking this because I have not yet found a 440nm LED with respectable lm/W efficiency, or I should say uE/s/m^2/W. Once I iron out the ratios I can reverse engineer an array with the correct ratios of light.

One question that I hope someone can answer.....ratios of light....does the 7:2 red:blue (just an example) mean the ratio of the colors presented by the lighting (say 70lm of red light and 20lm of blue light), or the ratio of PAR presented by the lighting (70 uE/s/m^2 of red and 20 uE/s/m^2 blue light). I hope I am making sense..

hey wuz happ'n ya'll most of that is over my head
i'm just a simpleton a logical man!!
i'm lookin at sNs hot ladies and tink'n hmmmm
the procyon is usin450nm and 635mn ?? at a 7 to 1 ratio
psysic some of those links were to just the home page of the site not to a direct product(white's) some where to direct product's
how do u rate a thread???
and just gettin roll'n tonite i 'm thinkin what i wanna build
is more like wot opie sayin was more for consumer friendly
4 to 6 wavelenths prolly look how good those two are doin
on sNs girls' just pump up the wattage!! get the cost down!!
are the cree's not hittin the 450?
puff puff puff

__________________
Compassionate Use Act of 1996 Prop 215 is State Law
Federal Law for the Masses
Federally Decriminalize Marijuana know support bill H.R. 5842
Federally Decriminalize Marijuana know support bill H.R. 5843

i think maybe the Idea behind using the same light for
veggin and for flowering comes from plants in the wild
use the same light for veggin and flower.
Sunlight it does'nt change color
but if your prime concern is effeiciency you have too change lamps

__________________
Compassionate Use Act of 1996 Prop 215 is State Law
Federal Law for the Masses
Federally Decriminalize Marijuana know support bill H.R. 5842
Federally Decriminalize Marijuana know support bill H.R. 5843

Well nevermind I think I jut figured out the answer. Since it doesnt matter the amount of PAR that a plant gets, or what ratio its from, then the ratios of colors must be maintained, not the ratio of PAR from different colors. must of been a little high...

lol....correcT!!! ratio is just the amount of reds/blues...actual LEDs...but your right about the PAR too

WT

__________________
Your style will eventually match your grow area and the amount of time and money you like to put into initial setup vs. long term maintenance.-stinkyattic
"Boy, the next words outta your mouth better be some brilliant Mark Twain shit...cause it is definitely getting chiseled on your tombstone"-Otis Driftwood
LED growing- An instructional grow log
Episode 3...Revenge of the LED

Actually, it does. When you harvest outdoors the plants are receiving more orange or reddish light than they are in the veg state. Depends on the suns position, which is different in autumn.

__________________