LED grow lights... input please.

[knna]

I refer to some hundreds of leds alone (mounted in a star, like luxeons). For me, this is my best goal achieved in the negociation. But, at same time, it did all my fraud alarms sound. All manufactures i contacted previously demand at least 10000MOQ. This one, only demands higher price for lower cuantity, but not a minimun order.

I think its rare, start a line production dont worth for so small cuantity. They say the arent producing the product currently, but made it with an 30% advanced payment, but at same time they said they can send me the samples in 10 days. All this seems very suspicious to me. But if i receive the samples and they are ok, the order still be of a cuantity (600-700USD) that may hurt, but dont do me a poor man. In the other hand, when i request escrow payment, they dont say not, but ignore the question, without any question. Knowing chinese suppliers, im afraid when time to contract, they will put objections.

My other concern is they will not be capable of doing the leds as they say that can do it. I must test the samples carefully, but i only have the equipment for electrical parameter testing, not for optical testing. Hire a spectroradiometer must be expensive, but if the leds have the perfomance they say, it worth the cost.

First, im asking for deep technical details. If it satisfies me, probably ill asume the risk. But im going to do all step by step, i havent any hurry at all. I think it may be a good deal, but i dont believe it until i have the leds working as offered.

Ill keep you informed.

knna Reviewed by knna on 05-23-2006. 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

[turtle420]

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
.

[Aaron385]

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.

[knna]

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.

[Aaron385]

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???

[oldsanclem]

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.

[Aaron385]

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??

[oldsanclem]

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:

[graymatter]

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.

[Aaron385]

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.