Need Help With Wavelength and Spectrum, LED...

I am interested in having some led units built for myself... I currently use 120 degree 120wtri-band 7.1.1 blue/red/orange. It worked great but Iâ??m ready to upgrade. Thelight coverage I need has to cover both stages of growing for it seems the UFO's dont cover the Vegetation needs. So I would like twounits, one for veg. and the other for flower. So from what Iâ??ve gathered on theinternet and my own trial and error I have put together a request for aspecific LED grow light. 90 degrees 400 pcs x 1w(160l Dimensions: unit size 18.8â?�L x8.3â?�W x2.7â??H .Bridgelux, Creed, Epstar, Edison, and Golden Dragon Led'sonly....7.1.1. ratio- color: Blue- 480nm, 460nm, 440nm, 415nm- White 6500k -IR/730nm and then a separate unit with another mixed ratio for flowering. Both these units will have dimmers and switches to try to be able to simulate our Mothers clock.Please help. Not sure if my veg configuration is at its maximum potential and also I have no definitive spectrums chosen for veg. or flowering... any advice would very much be appreciated. Ihave already made mistakes and canâ??t afford to make another. I look forward tothe help. Thank youâ?¦http://boards.cannabis.com/Plant.jpg

Blue is out of spec and in poor amount. White is pointless.

The purpose of an LED grow is to ONLY target the most efficient wavelengths. Different plants will have different requirements. Cannabis has at best determination 7 required specific wavelengths for maximum potential, two in the UV range, two in the blue, two in the red, and one in the IR.

Your ratio is following old NASA ratios - best advice is to quit following that outdated spec.

If you can't afford to make mistakes, my honest advice is to quit using LED, pick up an HPS or MH and some good ventilation equipment, and stick with that until you CAN afford to fail again. Go with what's known to work and play around on your own spare cash once it is accrued.

Guess I would like to know if I could benifet using twon different units?One Veg. and one for Flower. Makes sense to me?Pplease help...

No such thing as a veg/flower light. Light is light is light. Don't fall for marketing. Your only benefit from multiple units is more light and more exposure. You don't need multiple units if you design your light right the first time.

Protip: Red for flowering and blue for veg is the biggest myth on this planet. I've flowered with near-pure blue light and got equivalent results (and higher THC production.)

I'm hoping this is the latest wavelngh spectrum chart???

You are over-thinking this, sir.:)

Just 2 colors will grow superior meds, jus' fine.
No UV, no IR, no far red, no shotgun rainbow, just red and blue.

Only 2 colors, with an adjustable ratio, will show you that you, can indeed manipulate cannabis, (growth, height, internode spacing, flower timing), etc., by varying the R:B ratio.
I do it, in practice, all the time.

This is my first bud from 2 years ago.
A one-hit brain liquifier.
Attachment 277334

2 colors.
10. 5Watt red 660nm.
3. 5Watt blue ~460nm.
From seed.
That's all you need.

Listen to the "expert" if you wish.
Theory is lots of fun.:cool:

But ask for pictures of real world results before you act on their advice, yah?

I suggest find a competent LED grower who is getting the results you seek, and ask them about the practical application of leds.
Fer instance;
Attachment 277337
Old Mac uses Theoremes.

I use home brewed.

Attachment 277335Attachment 277336

This was grown with 52W. of 2 color leds
Attachment 277338

The information is all here, but you will have to dig for it.

Aloha,
Weezard.

Thank you very much for that info and support to the medicinal commoner of this interest. I would be looking for directions in having a LED unit built.Could you please tell me what the best approach would be to get optimal specs
(watts,line control,dimming,etc). I would think the more lumens the more canopy penetration. I notice that when using the 120w UFO 1wx100+ tri-band that the buds on the bottom of a 5ft 10inch Bubba-Kush plant that is close to finish are lame. The room is 4ftx4ftx7ft. The option is there to have the uiti built to anything available on the market. I have searched but so far and not founf anything reputable enough to be cofident in investing in. Please Help.....

Sure thing!

Start here:
http://boards.cannabis.com/indoor-li...ed-advice.html

Then get back to me with questions.

Aloha,
Weezard

Weezard! Youâ??re a God sendâ?¦ I too have been to numerous forums that pertains to our passion for DIY. Honestly thoâ?¦.I am out of my intelligence perimeter when it comes to LEDâ??s. The funny thing is i grew up in the walls of radio shack literally and I still canâ??t grasp the Lingo. Anyhow, I like a couple other members have been talking to China Mainland through Alibaba.com/ I have found a Reputable Company who will build anything that There Technology will allow. Last time I spoke with them I was using outdated NASA specâ??s for wavelengths and my own ignorance. Now, from this Forum that I humbly respect, I seem to be able to ascertain some true and accurate current info. I will leave the terminology to the engineers so if you could simplify the terms to my level I will appreciate very much so. So with this in mind this is my projected unitâ??s specs. For a room thatâ??s 4ftx4ftx7ft
1) I am not sure what my total wattage should be? 200w?
2) I should be able to mimic sunrise and sunset with a dimmer and switches to control the lines which in return should control the intensity, right?
3) What type of bulbs and are 5w bulbs the way to go? What type should I request to use? Bridge lux,Edison,epstar,cree,etc.
4) what degree should the lenses for the LEDâ??s be?
5) Could you tell me what the beneficiary of using 5w bulbs instead 1wx5 is? From what I have read and researched which we both know is lack of information on my part, but it seems 1wx5 would give more lumens than 1x5w.
6) Red, 660 nm and Blue 460nm are the only wavelengths you need for optimal growing?
Wezzard, Thank you so much for your interest. I told myself I would not use another UFO again and Iâ??m just about ready to start a new grow, so could you also tell me what the best approach using LEDâ??S seedlings is. I noticed I has some serious stretching that occurred when using the 90w ufo same spec has my current 120w Ufo tri-band red, 660nm,blue 455nm and orange 630nm with 7.1.1 ratio.
Overall Iâ??m content with my results but I know there is a lot more to uncover using Digital lighting. Thank you for your attention in this matter of mine

Sorry I missed this one GNX.
Prolly lost a notification in one of the many crashes.
I'm sure you've sorted it out by now and I'm keen to know what you went with.

Quote:

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Originally Posted by gnx

Weezard! Youâ??re a God sendâ?¦ I too have been to numerous forums that pertains to our passion for DIY. Honestly thoâ?¦.I am out of my intelligence perimeter when it comes to LEDâ??s. The funny thing is i grew up in the walls of radio shack literally and I still canâ??t grasp the Lingo. Anyhow, I like a couple other members have been talking to China Mainland through Alibaba.com/ I have found a Reputable Company who will build anything that There Technology will allow. Last time I spoke with them I was using outdated NASA specâ??s for wavelengths and my own ignorance. Now, from this Forum that I humbly respect, I seem to be able to ascertain some true and accurate current info. I will leave the terminology to the engineers so if you could simplify the terms to my level I will appreciate very much so. So with this in mind this is my projected unitâ??s specs. For a room thatâ??s 4ftx4ftx7ft
1) I am not sure what my total wattage should be? 200w?

Should be enough for some fat buds.

2) I should be able to mimic sunrise and sunset with a dimmer and switches to control the lines which in return should control the intensity, right?

Should be.
Not sure it will make much difference except for the 730nm. deep red.
Even then, I doubt the ROI is worth the extra complexity.
I do like the idea of timers kicking in the dimmers.

3) What type of bulbs and are 5w bulbs the way to go? What type should I request to use? Bridge lux,Edison,epstar,cree,etc.

Ask KNNA

4) what degree should the lenses for the LEDâ??s be?

Depends on the grow area, but I like 90 degree lenses as a compromise.

5) Could you tell me what the beneficiary of using 5w bulbs instead 1wx5 is? From what I have read and researched which we both know is lack of information on my part, but it seems 1wx5 would give more lumens than 1x5w.

Quite simply, ease of construction and a point-source effect that increases penetration.
1W. X 5 is more efficient, because the 1W. emitters are more efficient.
But, I weighed the cost and difficulty of assembly and decided to spend the electric on the 5W. emitters.
That and I had tried building arrays from hundreds of 5 mm. leds.
Then built a 300 LED array from 10 mm. leds.
It was a bear!
Added up to a li'l under 15W. all-together.
So, I solder 2 wires to a 15W. emitter and what's the cost?
Could be as high as 10% more power use for the same amount of concentrated photons.
BFD!
And testing my 56W. light that uses 3W. chips against my 55W light that used 5W. chips. was an eye opener.
3W chips are more efficient, but the 5W. chips grew bigger bushes!

That's why I use the even less efficient 15W. Ledengin emitters in my last light.
It's kicking ass on 3' tall Jack Herrers.
Grows 'em like a 400W. HPS

For 150W. array, with 10 mm. leds I would have had to solder >6,000 connections and grow very short plants.

6) Red, 660 nm and Blue 460nm are the only wavelengths you need for optimal growing?

So far.:thumbsup:

Weezard, Thank you so much for your interest. I told myself I would not use another UFO again and Iâ??m just about ready to start a new grow, so could you also tell me what the best approach using LEDâ??S seedlings is. I noticed I has some serious stretching that occurred when using the 90w ufo same spec has my current 120w Ufo tri-band red, 660nm,blue 455nm and orange 630nm with 7.1.1 ratio.

Best approach?
More blue!
7:1 will stretch them to death.
Your R:B for seedlings should be closer to 3:1.
More blue = tighter internodes.

Overall Iâ??m content with my results but I know there is a lot more to uncover using Digital lighting. Thank you for your attention in this matter of mine

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Then go to 5:1 for flowering and you'll be even more content.

Just passing on what I found effective with Jack Herrer.
It loves led light. Some strains do not.

Aloha,
Weezard