LED grow lights... input please.

[Ziggy Stardust]

im not too sure but if you look at the base of the babies it appears that the beam itself is only just spredding out enough to cover the entire plant. its my opinion that the reason he has them so high is inorder to have his lights cast a beam wide enough to cover it all? and did u see the end result? the size of the buds was very small as was the total amount.

kids ive been watching this whole LED thing for a really long time and for whatever reason NO ONE is posting any math formulas (in relation to abount of useable light required - per ft squared) ) / nano meters (to determine which of hundreds of types of LEDS to use - even within the red and blue wavelengths / lens types (to determine the spred pattern so that lights may be hung at the proper height) what we need to do is CONTACT some of these LED vendors and invite them to either post their addys here and researching specs in thier literiture or post INFORMATION..... maybe even make it known to these vendors that those who comply with our requests will be the PRIMARY suppiliers to the DOZENS of comsumers that are willing to invest HUGE amounts updating our rooms from this very site???

this is somthing that has to be done because i dont know about everyone but i do know that electricity is killing me costing me an extra $250 - $300 a month not to mention how much is being wasted just to COOL a room because of the intense heat generated by HIDs. all i know is that if any of these manufactures were to put out info id read it and if some were conflicting then id read it all and average out the #s...this has gone long enough what we need are some hard facts

Ziggy Stardust Reviewed by Ziggy Stardust on 12-17-2007. LED grow lights... input please. Hello guys, I'm exchanging eMails with a representative from a LED company. I asked him if they could produce a custom light for growing, and here's what he told me: Our options are as follow: 940nm, 850nm, 660nm, 630nm, 610nm, 590nm 570nm, 530nm, 510nm, 470nm, 460nm, 400nm and a total of 64 LEDs in the bulb. Rating: 5

[Opie Yutts]

There are LED's that shine in a wider angle, thus allowing you to get them close to the plant. You could get them close to the plant with non wide angle LED's too, you would just have to use a more reasonable amount. This is extremely necessary as the intensity greatly decreases as you move them back.

I agree about getting some numbers down. LEDs for weed farming is such a new concept it hasn't been thoroughly studied and documented. Ziggy, wanna be the first? I wish I could but I just don't have the time, darn it. I got a few numbers, but not enough for a real grow.

I still am waiting to see an LED grow that produced buds of any significance. I have no doubt that a person could get some decent bud from LED lighting. In general people are going about it wrong, and they refuse to spend any money to boot. At this point the initial set up would be expensive as hell to get one plant to bud nicely, but it can be done. Due to the life expectancy and low power draw, very soon they will become viable. Perhaps even today.

[SFGurrilla]

LEDs are nice. Low heat, means less A/C bill. Plus they run very low power. So less electricty used. They save money and grow some sick plants because you can perfect the color spectrum to how the plant works.

[Opie Yutts]

LEDs are nice... They save money and grow some sick plants.

You got any links or examples?

Cause I have yet to see any.

[ojitos1985]

I am doing a plataform with aprox 500 leds after reading this post, 250 red and 250 blues, pics soon.

[ojitos1985]

I am constructing a movable device for my clones, i am just waiting my plant to be able to give me some, with 500 ultra bright leds, 50% red and 50% blue, this is because i can not put high heat inside my closet, my options were CFL or fluo tubes, and now i will prove some luck with the leds. If it does work, will be really, really nice for me, with no danger of starting a fire in my case (because my closet its too small) and i can go for some vacations out there lol

I will upload pics as soon as my device is taking form.

[Ziggy Stardust]

I still am waiting to see an LED grow that produced buds of any significance. I have no doubt that a person could get some decent bud from LED lighting. In general people are going about it wrong, and they refuse to spend any money to boot. At this point the initial set up would be expensive as hell to get one plant to bud nicely, but it can be done. Due to the life expectancy and low power draw, very soon they will become viable. Perhaps even today.

Opie i represent a co-op here in calif whose soul purpose is to cultivate medicinal cannabis for really sick people. my clients have decided long ago to spend whatever it takes to get what we need. currently this is what were looking at .....

HID Hut - the makers of the LED UFO - The Brightest LED on the Planet

as you can all now see this is a very expensive product. the co-op is in the process of buying THOUSANDS of dollars of lights and whatever you can possible help us with would be deeply appreciated.

thank you

[Opie Yutts]

If your co-op has money to experiment, then I would say go ahead and get some of those UFO's. I've studied up on what's available today, and those are some of the best available at this time, if not the best. However, it would be experimental at this point, and I would quadruple the number of UFO's per area that they recommend. I would not deplete your entire lighting fund until you tried maybe one or two of those for an entire grow, budding as well. I keep saying that I have yet to see anything budded solely with LED's that produces anything worthwhile, and I have yet to be shown how I am wrong. They work OK for vegging, budding is a different can of worms.

Notice the info said it can be used as a supplement to CFL or HID. That's all I would recommend at this time, and your money would be much better spent on some CFLs that are the proper spectrum. If you want to steer away from HID because of heat/power draw, I would recommend studying up on the newer more efficient T-5 fluorescent lights. Of course there is nothing on the market that compares to the results you get with HPS during budding.

If you or your clients are willing to spend whatever it takes, and you are dead set on getting LEDs at this time, I would pay someone to make the proper LED arrays for you, or at least design them. People who manufacture LED lighting products at this time use maybe one nm (color) for blue and one for red. I'm guessing to be truly efficient, your going to want about 6 or 8 other colors, or varying degrees of red and blue, with the blue being the dominant color during veg and red being the dominant color during bud. Not just any blue and red, but the proper nm that corresponds to peak chlorophyll activity.

Good luck and let me know if you have more questions. I'm not an expert, but I have studied LED's.

[Blumen]

I'm reading here since quite a while and this post made me sign up finally.

I'm looking into building a led light with high-power leds (I personally wouldn't go for a 5mm led system), being into electronics since, well, decades. So I can compare my findings to the products that arrived on the market lately. One of the lights is the mentioned UFO, the other known to me is the procyon 100 from howngrownlights. Both have 80-100W of power-dissipation, something I aimed at for my own system, which I see somewhere between a 250 and 400W HID system.

I will have to try myself. A site testing (not selling) both of them - along with other led systems - on vegetables is maybe everybody should have a look at, if considering using leds for grow.

[Shambala]

I just bought two different led grow lights. Both using the same leds. One is the flat panel type with 225 mixed red/blue leds. And the other is the screw in bulb type with 168 mixed red/blue leds, 30 blue and 138 red.
I'll update later when they have arrived and been set up.
Blue LED light range - 430nm radiation peak athwart a 466nm emission range,
Red LED light range - 662nm radiation peak athwart a 680nm emission range,




I would like to get one of these as well so that I can stimulate flowering in specific parts of the plant while leaving the main lights on above.

This chart may or may not have already been posted but either way here it is again.
LED Grow Lights Gro-Tek GroTec HID Hydroponic light Fluorescent Growing Metal halide MH growing indoors indoors Ultraviolet Infrared light emitting diodes