LED grow lights... input please.

If they're ignoring a question, send them an eMail with just that question. Nothing more.

Man, I'm happy that you're going for this... really!

But keep your eyes open man... $600 over in that part of the world will buy you a lot of cheap beer and costly women.

The 10 day delivery sounds good.

But as you say... some optical equipment is needed to test the LEDs... to make sure they're pumping out the correct spectrums.

Hmmm... dude!!! I'm going to search my college books. I've got this instrument, cheap, in the back of my head.... It's for measuring wavelengths.

You point it at the light source, look through the peep-hole (like a kaleidoscope [?])... then, what you see inside, is a big nm-wavelength chart. Then, the wavelengths that are present, "illuminate" on the correct portions...

Damn it man... I'm usually very good remembering technical stuff... I can't remember the name... ermmm.... I'll check it out today... I hope I can post tomorrow.

When I say cheap, it might cost, you know, $40, $50 or $60... so it isn't that cheap... but better than costly-ass electronic equipment...

DARN IT! I can't remember!

I NEED WEED!!!

I HAVEN'T SMOKED IN OVER A WEEK!!!!

Best to you man, :) and godspeed ahead...

-turtle420 :cool:
.

I am making an attempt to feminize with 7500k led Bulbs, I read somewhere that excess light in this spectrum is a sure win for feminizing. I also have 6500k CFLs going. Will let you all know if it works.

I think that a bluish spectrum can slighty help to feminize, but only for plants not totally defined genetically. Help slighty agaings hermies development, but genetic has more effect than nothing else.

Using blue leds would be better for your purpose.

Well I am running a ton of lumens in the 6500k range and adding in 7500k with 60 super brite leds (yea.. ones from superbriteled.com).. Im killing two birds with one stone as well.. as I have it in the 24/0 room burning it 24/7/365 so I can see for real what LED life is like.. I am also insuring they can stand up to the high humidity and constant duty cycle of grow room use.

I think the future of led's for growing purposes lie in two key places.. one being the strings of LEDs that you can buy on ebay:

http://cgi.ebay.com/LED-String-Light...QQcmdZViewItem

because people are not thinking outside of the box on this.. why put led's in a fixture like a light bulb?? Thats not productive.. get these strings and hang them from a movable fixture hanging above the crop and just raise the strings between all the plants as they grow. Walla! Make sure you integrate (or alternate) various patterns of different watelength LEDs to achive desired spectrum intensities.

The second thing required will be the availablility of these strings in the spectrums we need without people doing it on purpose.. case in point being CFLs got really popular when you could go to wallmart and find one that operated at 6500k for $5.. and walmart didnt order that light for you to grow plants with..

I hope by the time my HPS system degrades to the point it needs replacing that I will be able to find LED strings like the ones listed above in the RIGHT spectrums for MJ growing.. because if I can.. I mean this guy is selling them for $6.67 (incl shipping) per 6 foot string of 12 1w lights.. 12w per string.. get 100 strings of these and for $667 you have more than a HPS 1000W worth of light, targeted exactly to the spectrums you want, with little heat, and the ability to basically touch the lights to the plants!

The limiting factor now is if those LEDs are in a spectrum that we like?? Its worth a little Q&A to find out..

MonkeyRacket- how is the grow going???

http://www.geeks.com look for led bulb 120v This is a simple way just screw in. I'm not suggesting to use one but it would solve a lot of problems.
If led worked some ONE would come out with data, thats all I have seen data, ON the leds,(angs, freq,Kelvin, pulse with,over drive, etc) nothing on the production of Pot/tomatoes. I wonder why the cashcroppers still use the 30 year old systems.
Only fly to the sun at night, its much safer. :dance: :thumbsup:
ohms, ohms , ohms O god I see delight zap.
If mites fly into a bug zapper will it make ozone.
Is a pussyfour, one less than 5.
Enjoy growing grams/watts/months just the facts.

Nasa has produced good results.. on lettuce. Ive read many people starting grows LED but i never see if they finished?? Anyone heard of sulfur microwave bulbs??

The last panels for grow labs, are florsent flat panels, with harvest of wheat and other grasses.
At $10,000 per liftoff weight cost, leds did not make it.
The sulfer bulb, is just like wind, solar power, only the goverment can efford it.
The sulfer microwave system requires light pipes to manage it. 1400 watts in 1000 watts out, last price I have seen is about $3,400, plus light pipes. a 30 year old ballast is much more efficent.
A few things to think about 1915 electric car went 80 miles on a charge a 2005 goes 80 miles on a charge. A 1940 Crosley got 50-60 mpg a new Toyota gets 50-60. just the higher cost of snow jobs.
The major differance is gas back then was .08 per gallon, and the break even point for the Toyota is a little over $10.00 per gallon. Today people are much richer they pay between 4-10 bucks a gallon for drinking water.
If N.A.S.A. can not efford them how can a pot growers do it.
Karma,Vodo,Hodo, Watts=watts,,, BTU=BTU,,, My fairy god muther is a whore and she charges for favors. :rasta: :twocents:
I must give everyone credit for trying, Put you B.S. M.S. Phd in elec. engeering to help N.A.S.A. :thumbsup:

I don't know much about indoor growing but I learned some things when researching LEDs:

Heat sucks
Light is good
Light is expensive
LED's cost more but operate more efficiently.
I have no idea if LED's produce great bud.

well i wouldnt write off sulfur microwave yet.. the new bulbs are shielded (dont give off any detectable waves.. even if they did it would just be like a microwave being on in the room.

The price is down too.. only about a cool grand.. and imagine if they can do for them what CFL's have done for flouros... could be putting out 100 lumens per watt at a higher PUR rating than HPS with no heat and no light degredation over the 50,000 (estimated) hr life of the bulb.

I mean.. pretty good specs and the price is only about twice what a good HPS setup costs.. It is supposed to be better in the watts to lumens ratio than it use to be and I think it may have potential in our hobby.

Also.. maybe we can make them?? Its a pretty simple design.. a magnetron (microwave generator like in your microwave) blasts its beams thru a ball filled with sulfur gas.. not too technical.. but im sure there is a little more to it.

Ok what I have now is 80 Red in series of 5 with 3 660nm and 2 630nm per series, I also have 3 blue per series, then alternate them 400, 432, 400,432. So for each breadbord I have 80 Red with 68ohm resistor per series and 15 blue w/ 68ohm resistor per series . Each breadboard put's out 7.7w of red, and 1.2w of blue.

Here is the power breakdown.

Red per breadboard:
* each 68 ohm resistor dissipates 27.2 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 870.4 mW
* together, the diodes dissipate 6880 mW
* total power dissipated by the array is 7750.4 mW
* the array draws current of 640 mA from the source.

Blue per breadboard:
* each 68 ohm resistor dissipates 27.2 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 136 mW
* together, the diodes dissipate 1080 mW
* total power dissipated by the array is 1216 mW
* the array draws current of 100 mA from the source.

Total for project:

Red total: 480 red, 288 @ 660nm, 192 @ 632nm
* each 68 ohm resistor dissipates 27.2 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 2611.2 mW
* together, the diodes dissipate 20640 mW
* total power dissipated by the array is 23251.2 mW
* the array draws current of 1920 mA from the source.

Blue total: 90 blue, 45 @ 470nm, 45 @ 400nm
* each 68 ohm resistor dissipates 27.2 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 816 mW
* together, the diodes dissipate 6480 mW
* total power dissipated by the array is 7296 mW
* the array draws current of 600 mA from the source.

23251.2 mw x 7296mw = 30w of LED power, should be equal to a 250-350w HPS?

take a look

shit looks damn impressive..

here's my input, in after lyk 5 months of silence lol

www.spectrumled.com.. ..flood lights.. 60LED bulbs, screw into a standard light socket..

jus orderd a few reds... 800w CFL, 2kW mh (nOt set up yet) for veg.. the red LEDs for flower...

any updates anybody?? who's doin it?

yea LED'ers.. I want to know how its been growin with you pimps that put your fundage on the line for this experiment. I respect you guys for this and I have been doing my part to try new things as well.

oh thank god i found this fourm, ive been studing these lights for some time and they are a very very good investment (also very very expensive) these lights use a avg. of 2watt and are a perfect spectrum of light....

instead if typing all this again, check out the link to my group @ myspace

here is the thread (if youre not logged in this may not work)
http://forum.myspace.com/index.cfm?f...03BF8027269597

if not... then click below and look at the forum post called : L.E.D. lights against HPS and MH (you'd be surprised)

http://groups.myspace.com/904stonerbrigate

my question is will they get plants to go into fruit (or bud) production and sustain the levels of energy supply required to produce fruit (or buds) to their potential.. Nasa grew lettuce which can be done with the weakest of floros so Im not convinced.. I have found floros just dont even come close to delevering photons at the energy level or intensity (not nm.. we all know they can beat in nm) required to force flower or bud out plants. I may however concider using them for VEG since they definatly seem to have potential there.

seedbare
So one, to lets say 6 leds
red, orange, blue, green, ir. uv. or any combination there of, will provide enough light for each plant, or is it a whole room.
I have a fert thats in pill form, it weighs 5 pounds each. Its simple to use, just pill in 100 gallons.
If joke goes over you head ,,,stand up.
After 5 months no one has data on what the Grams/watts/month data.
The old Pie in the sky thing.

I'm betting the LED's wont produce enough lumens or a varied enough spectrum for the plants to grow. Remember the sun is the best source of light, and going into LED technology is moving very far from the perfect light source.

Noble Idea, but in everything I've learned about growing plants is the light intensity is very important as well as a nicely spread spectrum. It is known the Low Pressure Sodium is a very efficient intense light, but its narrow yellow spectrum makes it as efficient as growing with an incandescent.

I still hope it works, but I have my doubts.

Welp this thread is 10 months old. Lots of input and salestalk being echoed, several people and projects are going - but does anyone have any decent output worth mentioning from these LED experiments?

Tukudia Ever notice that no one put the real data in
Grams per /watt per/month. :thumbsup:
With 10 months of input no data, But lots of freq, ang, etc. , but nothing about data of the plant output. :mad:
If it worked reguardles of cost cash croppers would have in a heart beat. l:dance: :dance: :dance:

I am just finishing my arrays and will start from seed around 09/01. I will start a diary and let everyone kow how it goes.

Be aware, if things to start to fall apart, I may supplement with a 400hps, just to save my crop.

I'll wager these LED's just don't put out the right spectral output to ripen big, meaty Afghani buds like 1000 watt Hortilux bulbs currently do. I'll also bet they just don't penetrate deeply enough to make tight buds on the entire plant. Sure, lettuce is easy, but we're not here for that, now are we?
A few years back, I was really anticipatory over a new bright light using microwave technology. It is called the Sulfur Lamp. I really thought this was going to work, and today I came across this article:
http://www.nasatech.com/Briefs/July00/KSC11970.html
So who knows, maybe in the near future we'll have a new type of growlight that will grow even more amazing buds than we already have using our HID's!

i wouldn't use em, they can maintain a lifecycle of 4 or 5 nodes, but after that. Theirs not enough, heat/light that is produced to run the rest throught its flowering stage.

I want show you my lamp :D

https://grower.cz/home/potw.php?s=&a...photoid=115602

and my gallery on this server :D
http://gallery.cannabis.com/showgall...0&ppuser=55374

Crap thos're some funky lights. Are they like big LEDs or something?

Quote:

---

Originally Posted by PearlJamFan

I am just finishing my arrays and will start from seed around 09/01. I will start a diary and let everyone kow how it goes.

Be aware, if things to start to fall apart, I may supplement with a 400hps, just to save my crop.

---

Word from the wise, DO NOT start seedlings with LEDs, start under CFLs for the first week to prevent stretching, THEN switch to LEDs.

Hmm... I'm wondering if I should start a new thread or just put this here? Here seems to be a good a place as any.

I would like to hear from those who are growing with or assembling LED grows and lights about the following information:

What strength MDC LEDs are you using?
How many volts/amps (or milliamps) does your system require or use?
Water clear or coloured LEDs?
How many LEDs and how do you have them set up?
Ratio of blue to red LEDs (if any)
Any other experiences or experiments that you have done.

That being said, on with my own experiments.

Inspired by this thread and science, two weeks ago I purchaced a handful of 5000mcd red LEDs and a couple 5000mcd blue LEDs. I pulled out some breadboard, resistors and soldering iron. After 2 good reminders on how hot a soldering iron can get I had completed my experimental module.

22 red LEDs and 3 blue LEDs made up my module (I stuck to the 10:1 ratio of red:blue LEDs, as you can see, my math sucks LOL!). Totalling 125000mcd of power. This tiny monster drew an astounding 250ma at 12 volts for a total power consumption of 3 watts.

I had a leftover, unused vegbox which I quickly stripped down and installed my new light. One of my favourite test subjects was then introduced. Cat grass. What a great experimental tool. Cheap. Easy to grow. My cats love it too!

The cat grass was placed in the box and subjected to no other light and within 6 days I had a healthy viable pot of cat grass. The cats approved and chewed away on it. I am impressed. Now onto phase 2, larger light with more LEDs and more experimenting.

While wandering through my local electronics store I stumbled across a dream. I found a 60000mcd water clear red LED. Yes, sixty thousand is correct! Qiuck math (which apparently in my head is not always accurate) shocked me to find out that my entire phase one grow light could be replaced by just over 2 LEDs. I just about fell over.

The downside. These puppies are expensive. $2.25 each with tax. My 100 light set up with the 5000mcd LEDs was going to cost me under $25. 500000mcd. Nine 60000mcd LEDs would give me 540000mcd at $20.25, just for the LEDs.

So now I ponder and design with my money and math.

And now for something completely different:

I would love to see this thread edited. It takes far too long to go through the "You can't grow with LEDs" "LEDs will never compare to HID lighting" to get to the information you need.

Now an exercise in futility.

As consideration to those of us that are experimenting with LEDs and are benifitting from the open exchange of information, is it possible for the narrow or close minded posters to keep their thoughts to themselves and not fill up the tread with crap?

Everyday I walk down the street and see stupid people. I resist the tempatation to tell them that they are stupid. I smile to myself and keep my mouth shut. I'm just asking the non-believers to smile.

When we have something good we will post it.

okay,

Quote:

---

Originally Posted by Skeebo

What strength MDC LEDs are you using?

---

I using LEDs:
RED 500mcd / 110° / 660nm
Blue 1400mcd / 60° / 470
I thing priority is degree of led biggest is better(minimum is 30 - 60°) 1500mcd/60° is same like 500mcd/110°. But 500mcd is cheaper.

Quote:

---

Originally Posted by Skeebo

How many volts/amps (or milliamps) does your system require or use?

---

about 20mA on 1,75V each LED

Quote:

---

Originally Posted by Skeebo

Water clear or coloured LEDs?

---

it's same

Quote:

---

Originally Posted by Skeebo

How many LEDs and how do you have them set up?

---

My system have 720pcs of red and 56pcs of blue LEDs, now. I want 3 times more
I can buy 2000pcs of red for 100USD :D

Quote:

---

Originally Posted by Skeebo

Ratio of blue to red LEDs (if any)

---

I thing best is from 16:1 to 8:1, maybe more.

Mini LED box by Hogi - its in czech, but nice photos :D - https://grower.cz/forum/showthread.p...&pagenumber=10

Quote:

---

Originally Posted by Skeebo

Hmm... I'm wondering if I should start a new thread or just put this here? Here seems to be a good a place as any.

I would like to hear from those who are growing with or assembling LED grows and lights about the following information:

What strength MDC LEDs are you using?
How many volts/amps (or milliamps) does your system require or use?
Water clear or coloured LEDs?
How many LEDs and how do you have them set up?
Ratio of blue to red LEDs (if any)
Any other experiences or experiments that you have done.

That being said, on with my own experiments.

Inspired by this thread and science, two weeks ago I purchaced a handful of 5000mcd red LEDs and a couple 5000mcd blue LEDs. I pulled out some breadboard, resistors and soldering iron. After 2 good reminders on how hot a soldering iron can get I had completed my experimental module.

22 red LEDs and 3 blue LEDs made up my module (I stuck to the 10:1 ratio of red:blue LEDs, as you can see, my math sucks LOL!). Totalling 125000mcd of power. This tiny monster drew an astounding 250ma at 12 volts for a total power consumption of 3 watts.

I had a leftover, unused vegbox which I quickly stripped down and installed my new light. One of my favourite test subjects was then introduced. Cat grass. What a great experimental tool. Cheap. Easy to grow. My cats love it too!

The cat grass was placed in the box and subjected to no other light and within 6 days I had a healthy viable pot of cat grass. The cats approved and chewed away on it. I am impressed. Now onto phase 2, larger light with more LEDs and more experimenting.

While wandering through my local electronics store I stumbled across a dream. I found a 60000mcd water clear red LED. Yes, sixty thousand is correct! Qiuck math (which apparently in my head is not always accurate) shocked me to find out that my entire phase one grow light could be replaced by just over 2 LEDs. I just about fell over.

The downside. These puppies are expensive. $2.25 each with tax. My 100 light set up with the 5000mcd LEDs was going to cost me under $25. 500000mcd. Nine 60000mcd LEDs would give me 540000mcd at $20.25, just for the LEDs.

So now I ponder and design with my money and math.

And now for something completely different:

I would love to see this thread edited. It takes far too long to go through the "You can't grow with LEDs" "LEDs will never compare to HID lighting" to get to the information you need.

Now an exercise in futility.

As consideration to those of us that are experimenting with LEDs and are benifitting from the open exchange of information, is it possible for the narrow or close minded posters to keep their thoughts to themselves and not fill up the tread with crap?

Everyday I walk down the street and see stupid people. I resist the tempatation to tell them that they are stupid. I smile to myself and keep my mouth shut. I'm just asking the non-believers to smile.

When we have something good we will post it.

---

In all this you never mentioned what (NM)nanometer they are. That makes all the difference in the world. Can't just use red and blue.

http://www.growwithleds.com/uofmstudy.htm

That study is worthless - Why would you put a 400 Watt HPS Lamp ~ 6 feet away from the tops? 6 FEET?

Has ANYONE ever gotten an LED setup to (through) flower and compared the (only relevant calculation for us) grams/watt? I'm still waiting for that one..

Quote:

---

Originally Posted by Tokudai

That study is worthless - Why would you put a 400 Watt HPS Lamp ~ 6 feet away from the tops? 6 FEET?

Has ANYONE ever gotten an LED setup to (through) flower and compared the (only relevant calculation for us) grams/watt? I'm still waiting for that one..

---

my friend have in second experiment 0.5g/W

Here is an some photos of a test I started. These are 2 clones taken from a plant started oustide, it is bag weed to boot. The pics were taken 2 days after transplanting from a peat pellet to the square container. They were under approx. 75w of CFL during rooting. There are 6 other sisters under a 400w mh. I will post comparisons as I get time to do so.

Here you go.

A couple of more pics.

Here are some photos taken just minutes ago. This will be day 5 under the LED's. In the last 2 photos are for comparison. The 2 on the left are the LED ones, the 3 on the right are the 400w MH ones.

Hi folks,

I'm new in LED growing and got only basic growing knowledge, so maybe I can get some helpful comments here.

History:

- First I started with 54 High-Power LED's (6 UV, 30 Red and 18 Royal Blue) in a little growroom (enough space for Bonsai ;-) ; only as an experiment).
Result: The plant growing speed was very slow :| . My reference plant on my balcony grows faster and higher.

- In the second step I've added some Luxeon LED's
Result: Wow - the growing speed increases potentially. The mass of the plant is now greater as them of my reference plant. Additionally it got more and bigger bastard brachnes!

- Now in my third step I use pulsed light (since two days). My current problem is primilary the temperature. With the non-pulsed Luxeons it was 28 degrees, now only 22. Will this be a problem? Without the fan (used to cool the Luxeons, which isn't needed with my pulse frequence) the tempereature is 26 degreed (optimal), but the humidness is about 70-80 per cent (50 with fan).

Have anyone made experience with pulsed lights. Are there really better results in growing? What frequencies and pulse-on/off times are you using?

What are you thinking about the healthiness of my plant (see attached pictures)?

What are you thinking about my project?

Do I really need a CO2-reactor to speed up growing?

In my opinion, growing with LED's is really possible, but you need a lot of them or Luxeons, but you can save a lot of costs for electricity. And the life time of LED's is much longer then of HID's, especially if you are using pulsed light (not overdrived).

These homemade LED arrays are awesome, like Disco Star Trek or something, but why don't you just use the SolarOasis LEDs? They seem to have figured it all out already, the only problem might be the high cost.

The SolarOasis LED's are really to expensive!!! And I wan't to control the LED's by myself (current, pulsing). And why do you think, they solved the problem? In my opinion, they doesn't have anough power, as I experienced for myself with the High-Power LED's. With the Luxeon's, the growing speed increased so much, even though the wavelengths aren't 100 per cent optimally.

Sorry, but I would be appreciate for helpful comments regarding to my questions.

Well check out this thread from a different message board, I think that on about page three he says that he got like 3oz from two plants just using solaroasis, but he used eight bars, which of course cost a lot.

http://hg420.com/showthread.php?t=16360