Calling out to Weezard for LED advice

It's been a lonnnnnng day and that was just what I needed! :S2:

I'm sitting here looking at charts and jotting down wavelengths. I have to let the manufacturer know tomorrow how I'd like him to make the two lights for me.

I'll try getting the 90W UFO light with the mixture of the blues using the absorbtion peaks you've shown me in those charts. Let's see how the plants like it with just blues for veg.

For the flowering light I'm going to load up on the 660's per your advice. Though, with me using the 1W LED's as opposed to the 15W ones that you use is that ratio still alright? Or, should I use more red and less blue since they are weaker lights? More like an 8:1 ratio because of their weakness? (they bow down and cry in the presence of your lights!) :D

Your thoughts?

Quote:

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Originally Posted by ledtime

It's been a lonnnnnng day and that was just what I needed! :S2:

I'm sitting here looking at charts and jotting down wavelengths. I have to let the manufacturer know tomorrow how I'd like him to make the two lights for me.

I'll try getting the 90W UFO light with the mixture of the blues using the absorbtion peaks you've shown me in those charts. Let's see how the plants like it with just blues for veg.

Excellent! I'm curious about the blue peaks but 430 nm. leds appear to be a rare beast. At least they were last year.:)
And I love a well thought out experiment.

For the flowering light I'm going to load up on the 660's per your advice. Though, with me using the 1W LED's as opposed to the 15W ones that you use is that ratio still alright?

Wish I knew that as a certainty.
Since the 15W emitters are actually 4. 5 Watt dies on a single substrate, it would seem that the ratio holds.

Or, should I use more red and less blue since they are weaker lights? More like an 8:1 ratio because of their weakness? (they bow down and cry in the presence of your lights!) :D

Pshaw! "Many hands make light work".
Just keep yours closer to the canopy.
And if you cut it to 8:1 you may have more stretch than you want.

Your thoughts?

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Oh, no, brah!
You nevah wanna say dat to an ADD.:tin foil hat:
("They echo and they swell, down from Berkely to Carmel")
Betta you re-phrase dat or we be here all night.;)

I only half kiddin' 'bout dat.
My brain is "on the loose wig alla time".:jointsmile:

But, thanks for asking.:D

Aloha,
Weeze

Hi, I've been following this thread for a bit and happened upon this:

LEDs used to produced plant antioxidants - UPI.com

Hope this isn't too off topic - I wasn't sure where to post. In any case, you can just check google news for "UVB led lettuce" and you'll see there are a few different news outlets showing interest.

I asked for a quote on Seoul's Optodevice 280nm LEDs a while back and all I can remember of the experience now is the sound of my jaw hitting the floor. I think that reptile lights offer a more affordable alternative - that is, if they work as well as the aforementioned LEDs. I'm not aware of any other UVB sources. Even incandescent bulbs appear to produce minimal UVB according to these sources:

No UVB from tungsten filament incandescent lamps

http://www.flukerfarms.com/PDFs/Lightbulb-FAQs.pdf

I recognize that we're not trying to grow lettuce here (it's tomatoes, right?). Regardless, the theory that resin is, in part, a defense against solar UVB radiation lends plausibility to the supposed benefits of UVB.

Thanks to everybody who has been posting. I'll be sure to contribute more once I've started work on my own LED arrays.

W,

I was expecting a nice check to come in the mail yesterday but it probably won't come until Monday....SOOOOO, that leaves me with this weekend to make my final decision on how I'd like to setup these lights.

You use lenses to concentrate your lights for better penetration do you not? That's probably why you get such great results. I'm trying to figure out how much power I really need.

If using a DR100 40"x40"x72" to grow in and a DWC setup. What do you think of three five gallon buckets, one plant per bucket in that size space?

The main light for veg would be the 90W UFO type, and the main light for flowering would be a 120W model.

I'm going to try the 90W version with just the blue like I mentioned before as it seems to be working for others. If it doesn't work I'll have the 120W light I could use.

I just hope the 120W with the party bulbs for the far red will be enough for that size area.

Your opinion?

Quote:

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Originally Posted by ledtime

W,

...
You use lenses to concentrate your lights for better penetration do you not?

Yes, on the 5W emitters. No on the 15W., so far.
I am playin' with some lenses but they contain too much heat for the big guys. Looking for some tiny parabolic reflectors to use instead of lenses for the next flowering.
Might end up making my own out of 4mil Mylar cones.

That's probably why you get such great results. I'm trying to figure out how much power I really need.

Aren't we all?:)

If using a DR100 40"x40"x72" to grow in and a DWC setup. What do you think of three five gallon buckets, one plant per bucket in that size space?

IMO ya can't beat 5g. DWC one plant per bucket. (You've been reading:thumbsup:)

The main light for veg would be the 90W UFO type, and the main light for flowering would be a 120W model.

I'm going to try the 90W version with just the blue like I mentioned before as it seems to be working for others. If it doesn't work I'll have the 120W light I could use.

I just hope the 120W with the party bulbs for the far red will be enough for that size area.

Your opinion?

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'bout perfect for the space if ya wan't big plants.
Though you might as well chop the bottom branches off.

Even with lensing they won't yield much.

Old Mac pointed out the advantage of "lollipopping" multiple clones over harvesting top buds from trees. So, this next run will be a clone SOG.
Did a scrog on da last one. Too much work.
If 8 to 10 short girls outproduce 3 tall ones, I'm thinking about layering my tiny 8' high room into 2. 4' high rooms and going all coco. But, that's just da lazy in me. I don't really need MORE meds. But I can't stop,:weedpoke:. It is my nature.

I'm stoked about your 90W. "dual blue" vegger!
It looks promising.:cool:

Unka Sam "stimulated" me with $250, den told me I had ta spend it right away or pay taxes on it.:wtf::D
Imagine dat.
Da feds supporting medical-MJ. with my share of the National debt?:jointsmile:
How berry round and :cool: is dat?
Will wonders never cease?:upsidedow

Aloha,
Weezard

Well.......not exactly "lollipoppin", I try to do it without the stick part.

Here's a 10" example, when finished slightly taller and much fatter.:thumbsup:

WOOF!
Kudos, Brah.
Dat be ONO!

(so good it broke da mout')

Weeze:jointsmile:

mac, are you just letting them get roots and then flowering?


-shake

All meat and no potatoes! :D

Wow Old Mac...that is one stout lady you have there! :thumbsup:

The dual blue light should be interesting. I'm just concerned with the output of the flowering light. I would be MUCH more comfortable with a true high powered LED light, but I don't have the tools to really do it right. I would make DH feel good with how many LEDs I could burn up...and there aren't that many to go around!

So weez, you think three is a good limit for buckets in that size space? I was thinking four would be a bit much if they get bushy....