LED grow lights... input please.

[Opie Yutts]

Awesome! Looking forward to seeing it. How many plants for the 500 LEDs? I'm thinking one, but my guess is that you are doing more. What nm red and blue?

[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

[Blumen]

Prepare to have the light very close to your plants, unlike the pictures for those 5mm led-lights show. Closer than CFL.

[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.

posted below are photos and a grow diary. i dont know if this is what your wanting but it appears to be the most extensive work ive seen thus far - he observes that on his next LED proj he would req of the manuf hes working w to increase the amt of RED lights used to foster more flower development

we can do better than this kids if we all share what were doing and how its working as for me im ordering my 1st ste of OFO's this week and starting my 1st LED grow under thier currend BLUE matrix and will f/u by req that a more RED matrix be developed


Experiments with Hydroponics, Aeroponics, and LED Grow Lighting

[Treetops]

Thanks for the link. Very interesting, but I don't undestand why the guy has the LEDs 3 feet from the plants. One advantage of LEDs is that you can put them right next to the plants, for much better growth. He's producing scraggly looking plants, but he is experimenting, and he is getting buds. He needs more LEDs and he needs to have them closer to the plants.

Opie,
Check this guys grow...hes got them all over the place.....

Treetops:thumbsup:


http://boards.cannabis.com/indoor-gr...2-hps-led.html

[the image reaper]

Lowryder :wtf: (and, notice he combined a HPS with the LEDs) ... I'm with Opie on this one "show me a BIGASS marijuana plant grown under LEDs" :jointsmile: ... I don't think ya can show me that, without spending $100,000 on LED lights ... but, it is a very intriguing idea, regardless, I'm hoping for great results :smokin: