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OfflineOrgoneConclusion
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Registered: 05/06/11
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Re: Perfect LED panel [Re: djnoktirnal]
    #555113 - 05/13/11 12:52 AM (8 years, 10 months ago)



Check out the curve for the 3000K. Nearly perfect!


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Offlinechowdan
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Re: Perfect LED panel [Re: OrgoneConclusion]
    #555123 - 05/13/11 02:17 AM (8 years, 10 months ago)

what about a homemade led? Instructables had a guide on building one. if you search high power LED grow lights youll find the one im talking about. Looks like it might be a cheaper alternative.


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I am a legal patient in Washington. Everything i do and say on here is for personal gain.

- We live in a free country as long as you can follow the governments laws...-


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OfflineOrgoneConclusion
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Re: Perfect LED panel [Re: chowdan]
    #555129 - 05/13/11 03:32 AM (8 years, 10 months ago)

I am not searching for your link. It is not about home-made vs. manufactured. It is about efficient vs. inefficient; correct spectra vs. incorrect spectra.

Any lighting will 'work'. So what? We are searching for the most bang.


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Offlinechowdan
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Re: Perfect LED panel [Re: OrgoneConclusion]
    #555187 - 05/13/11 12:57 PM (8 years, 10 months ago)

There are many "manufactured" items on the market. Not all manufactured things are the best. Take computers for an example. You can spend 5 grand on a high end desktop from alienware or you can go and build it yourself for 2-3 grand. Because its manufactured doesn't mean its the best.

Go have a smoke man and relax. All i was doing was trying to help a fellow weedman out. Apparently you haven't had enough weed in your life to mellow out.


--------------------
I am a legal patient in Washington. Everything i do and say on here is for personal gain.

- We live in a free country as long as you can follow the governments laws...-


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Offlinedjnoktirnal
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Re: Perfect LED panel [Re: chowdan]
    #555190 - 05/13/11 01:10 PM (8 years, 10 months ago)

Would it be better to have a LED Light that could be switched in a way that you could have only blue during veg and only red during flower? If so, what would the ratio of reds to blues to oranges need to be? What about a built in timer? Would you rather have a timer that you could set for any interval, or one that had 3 modes: 24/0; 18/6; or 12/12?
These guys in china will basically do whatever. If I'm going to have them build it, I want it to be tailored to this purpose.


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Offlinedjnoktirnal
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Re: Perfect LED panel [Re: djnoktirnal]
    #555216 - 05/13/11 03:52 PM (8 years, 10 months ago)

Ok got more info from the mfr:
3yrs Warranty

PAR output      @15cm    @30cm    @60cm
90W  (90x1W)  - 715.8    275.6    79.19
120W (119x1W) - 960.9    312.3    99.42
300W (288x1W) - 1237.4  559.8    171.31
600W (288x2W) - 2461    1051.5  348.1
600W (576x1W) - 2226    1218.2  467.6

there will be a built in timer. Still trying to come up with perfect combination of wavelengths. They don't have UV-B. Is UV-A at all needed? What wavelength is considered "far-red"? in the plan so far is

7    :    1    :    1
RED  :  BLUE  :  Orange
630nm    460nm    610nm
660nm              615nm

they can add 390nm-400nm UV-A; and others.

They have some "tube" style lights I mentioned, but they don't require a fixture. They just have a std. power cord. they have them from 10-25 1W LEDs in 60cm(10LED)- 150cm(25LED). These may be useful for side lights.

Would white LEDs be in any way beneficial?

I am looking for any possible suggestions.

@Oregone
Do you have a chart or anything that would show a "perfect" spectrum for a MJ plant? Or in general? I like how the one you posted has percentages, I can use that to figure out the LED color ratio I need. I am assuming the one you posted is just showing curves for those bulbs.

And as for home made. It is usually how I roll, but it is actually less expensive to have the Chinese make it. I wouldn't want to have to solder 288 tiny LEDs onto a board. Plus the circuitry. Lots of time + expense of not being able to buy components in bulk.


Edited by djnoktirnal (05/13/11 03:58 PM)


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Offlinedjnoktirnal
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Re: Perfect LED panel [Re: djnoktirnal]
    #555231 - 05/13/11 05:14 PM (8 years, 10 months ago)

so after consulting my biology text...
the spectrum I want is
RED-    630nm & 660nm
ORANGE- 610-615nm
BLUE-  430nm & 460nm
keeping the 7:1:1 ratio

also I have read a lot of other threads on the topic of LEDs. Several people have mentioned that they don't think that LEDs are "good" because grow light mfrs (HPS mfrs) aren't selling these. While I think LEDs show promise, I wouldn't say I'm biased. My point is that the mfrs ARE in it for the money. Replacement bulbs are big business to them. LEDs have a VERY LONG life. This would be contrary to a HPS mfr's business model. So I don't discount them just because Sun or Hortilux doesn't make them. I like the fact that they use less energy and don't produce heat. These 2 things make using anything larger than 150W when using HID impossible for me. and the ballast on this 150W uses as much energy, if not more, as the bulb itself.

Not all of us have $1000's or even $100's to spend on a grow. I wish I could get a decent one going, then afterward, maybe I could get some decent equipment. But still, I want the most end product for the least cost (equipment, nutes, energy, water). Right now, I would be sunk if my electric bill went up $150. I can't have a room with 1 1000W HPS, much less 4 of them. I can't even afford a 400W.

Sorry for the rant, I get envious seeing all the nice equipment with the beautiful plants, while I grow in a box. It upsets me when the peeps who have $$ and nice shit tell others they shouldn't bother unless the buy all the most expensive equipment, and do it big. We all can't afford it (financially, legally, etc. There are so many different situations).

OK soapbox is packed up.

Any thoughts on the LEDs?


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OfflineOrgoneConclusion
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Re: Perfect LED panel [Re: djnoktirnal]
    #555240 - 05/13/11 05:45 PM (8 years, 10 months ago)

Quote:

Do you have a chart or anything that would show a "perfect" spectrum for a MJ plant? Or in general?




Just do a Google search. There is no cannabis specific one, but the generalized plant growth spectral graphs are close enough.


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Offlinedjnoktirnal
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Re: Perfect LED panel [Re: OrgoneConclusion]
    #555257 - 05/13/11 06:27 PM (8 years, 10 months ago)

yeah, I got it from my Bio book. Hard to tell exactly where the peaks are on a graph online.
looks like
35% 630nm
35% 660nm
10% 610-615nm
10% 460nm
10% 430nm
is what I'm going to ask for. Hopefully they have 430nm.


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Offlinedjnoktirnal
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Re: Perfect LED panel [Re: djnoktirnal]
    #555364 - 05/13/11 11:17 PM (8 years, 10 months ago)

Update:
Mfr. just got back to me. The spectrum is 5 bands. as posted above.
light is switchable to give blues only, reds only, or reds/blues together. 3yrs warranty. Now I just need some cash to get one. They are even going to put a custom logo on it. They say that each light they make can have spectrum customized to spec if need be. They are cheaper than everywhere else I have seen. Maybe you will see me growing with some sweet customLEDs soon!


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nothing i have said or done is real. I like to make up stories and post them on the internet. I have nothing better to do.


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OfflineTank333
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Re: Perfect LED panel [Re: djnoktirnal]
    #555424 - 05/14/11 04:15 AM (8 years, 10 months ago)

Did they ever answer about the idea about the seperate switch for some green spectrum diodes? I think that was a neat idea, honestly...


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Offlinedjnoktirnal
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Re: Perfect LED panel [Re: Tank333]
    #555427 - 05/14/11 04:58 AM (8 years, 10 months ago)

yep, he said they coud customize the spectrum to be any way we want. could also do greens on the tube style lights, so you're not sacrificing LED used for growing. Might not be so bad on the larger lights, but for the smaller ones it may be an issue.


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nothing i have said or done is real. I like to make up stories and post them on the internet. I have nothing better to do.


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Offlinecamplo
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Registered: 05/14/11
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Re: Perfect LED panel [Re: djnoktirnal]
    #566714 - 06/23/11 12:12 AM (8 years, 9 months ago)

soooooooo what happened to this thread. Any know where to find the super led hook ups in china? wtf, way to spread the info...


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Offlinealienscience
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Re: Perfect LED panel [Re: camplo]
    #566999 - 06/24/11 04:13 AM (8 years, 9 months ago)

You can get some pretty good 15w ones from china on ebay.  They have two main versions.  Ones with SMDs and normal ones.  The SMD ones are like 10x brighter, but they cost 2x as much as the 15w ones.  They look like they work pretty good though.  I've experimented (and even sold a couple) 15w ones.  They're eqiuvelant to a 75w CFL IMO, but they spread light out better.


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OfflineGoombah
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Re: Perfect LED panel [Re: djnoktirnal]
    #567193 - 06/25/11 02:10 AM (8 years, 9 months ago)

Quote:

djnoktirnal said:
Not all of us have $1000's or even $100's to spend on a grow. I wish I could get a decent one going, then afterward, maybe I could get some decent equipment. But still, I want the most end product for the least cost (equipment, nutes, energy, water). Right now, I would be sunk if my electric bill went up $150. I can't have a room with 1 1000W HPS, much less 4 of them. I can't even afford a 400W.





I hung a 1000w lamp and a $2.00 clothesline, shut off the drier and switched all of the household bulbs to CFLs. My electric bill is now half of what it used to be before the 1000w lamp. Amazing how much household appliances cost to run. My entire hydro system cost $125 with parts bought from hardware stores,including the nutrients,hydroton, net pots, etc. The light and ballast was the expensive part, yes, but it paid for itself 10x over on the first grow.

Have a yard sale or sell some shit on ebay. It is worth it to make the extra effort. LEDs suck for flowering, been there, done that.


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OfflinegeokillsA
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Re: Perfect LED panel [Re: djnoktirnal]
    #567264 - 06/25/11 01:41 PM (8 years, 9 months ago)

Quote:

camplo said:
soooooooo what happened to this thread. Any know where to find the super led hook ups in china? wtf, way to spread the info...




Check out the vendors listed over on Alibaba.com.  There are tons of LED manufacturers on there, most of them located in Shenzhen, China.  I consulted with a whole bunch of them back in 2009 and ended up having Sino-Colour Technology Limited build a 300w panel of 288 1w LED's manufactured with my chosen ratio and orientation of six different LED's:

         

The total cost shipped to the US was around $500, though the panel arrived defective TWICE and it took several months before I had a working unit in hand to play with.  Frankly, I don't use it anymore (though this thread is making me want to try it out again).  The 300 watt panel did work, but it produced growth that was no more impressive than a 250 watt HPS I had running on the same genetics.  So in so far as relative power savings versus yield is concerned, I didn't see any benefit from the LED although I will readily admit that this could have been due to less-than-ideal light spectrum or output issues with the specific LEDs used in the product I ordered.


Side by side visual comparison between a 400w HPS / 300w LED / 250w HPS:

         


Quote:

djnoktirnal said:

What wavelength is considered "far-red"?



700 - 720 nm.  Unfortunately, this light was not available from the ten or so companies I had consulted with at the time the unit I bought was produced.


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Offlinecamplo
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Re: Perfect LED panel [Re: geokills]
    #567959 - 06/28/11 02:18 AM (8 years, 9 months ago)

OK everyone keeps talking about these manufacturers in china that can put together a working board of leds of my choice for a cost. Where in the hell do I find them.


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Offlinealienscience
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Re: Perfect LED panel [Re: camplo]
    #568083 - 06/28/11 08:05 PM (8 years, 9 months ago)

alibaba.com. 

But you can get the same panel pre-fabbed for $100 less on ebay.


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OfflinegeokillsA
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Re: Perfect LED panel [Re: camplo]
    #568404 - 06/29/11 02:51 PM (8 years, 9 months ago)

Quote:

camplo said:
OK everyone keeps talking about these manufacturers in china that can put together a working board of leds of my choice for a cost. Where in the hell do I find them.




Dude, I mentioned the specific company I used in my above post. :flowstone:


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Invisiblemhbound
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Re: Perfect LED panel [Re: geokills]
    #568410 - 06/29/11 03:13 PM (8 years, 9 months ago)

Yea he did and I agree with either that site or one similar, I've had good luck on these sites for most things and believe me I've used them for quite a few...Anyway, try em out:

Alibaba

There are others but I'm not catching them right now I'm slow this afternoon.


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