LED manufacturer question

[JustPassinThru]

http://www.ebay.com/itm/2013-135W-L...276?pt=LH_DefaultDomain_0&hash=item3cd1aff46c

my friend is looking at this light for his first grow, and he was hoping someone could lemme know if this manufacturer produces a solid product, instead of maybe something that is gonna show up broken or anything. Also, if you have suggestions for a similarly priced LED that would work better, he would really appreciate it. His space is going to end up being roughly 25" x 16" x 25" in the end, if that makes any difference to you guys.

 

[Dank Demon]

Heard these are the bomb http://www.ebay.co.uk/itm/300648948106?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

 

[MeanBean]

I always wonder about these 10+ spectrum lights. To me the proper spectrum configuration makes or breaks the quality of your plant.

Seven of the 10 spectrum listed are a "Close shot" at the proper spectrum's but not close enough.
As far as the following spectrum's I'd say there a complete waste.

610nm(orange)
430nm(violet)
2800K(white)

 

[krypt]

The thread below should answer any questions you may have.

https://www.icmag.com/ic/showthread.php?t=222390

 

[tebos]

Seven of the 10 spectrum listed are a "Close shot" at the proper spectrum's but not close enough.
As far as the following spectrum's I'd say there a complete waste.

610nm(orange)
430nm(violet)
2800K(white)

2800K isn't even a spectrum. 430 and 610 are right in the peak area of the photoynthesis.

 

[MeanBean]

610nm(orange) & 430nm(violet) Are way to far off the peaks needed to reach in my opinion. Also 2800k is not a spectrum but it could be considered a white or full spectrum. That's going backwards, might as well be using HPS, only 15% is absorb-able by the plant.

 

[tebos]

See for yourself:

I agree that white only LED light's are basically waste of energy BUT proving full spectrum (white) is a good thing because even green (550nm - the least useful spectrum) is being absorbed.

 

[MeanBean]

Actually in our studies we have found that Green is useful. the plant does not absorb green however in the presence of green it is easier for the plant to absorb other colors like the red and blue needed.

545NM is in our lights, just one diode per cluster, overdoing it wont help but a small amount will. stil no need to supply the other 80% of spectrums not needed in a full spectrum white led

"just thinking out loud here"

 

[positivity]

My all white DIY has been doing a ass whooping of every cute pink light I ever bought

Pink light is for spaceships and catching newbies

Area 51, apache tech, or DIY. Do your eyes a favor

Dank demons suggestion looks good for the price if that's your limit. Hard to beat that price

Just have a feeling in a few years the red heavy spectrums are going to be leftover overstock.

 

[Loollo]

I think the growth it's how much useful energy the plant absorb. I'm using only 630nm and 460nm and in few days.......

Before:

after 5 days:

 

[Neekz]

610nm(orange) & 430nm(violet) Are way to far off the peaks needed to reach in my opinion. Also 2800k is not a spectrum but it could be considered a white or full spectrum. That's going backwards, might as well be using HPS, only 15% is absorb-able by the plant.

When there is a high photon density , the white/green light is a bit more important for photosynthesis (Notice PAR absorption charts are not sharp peaks like colored L.E.D.'s are classified, instead plant's prefer a more broad range, with plenty needed in the green/white...). L.E.D. still put's out white light more efficient than any other source.Opinions are opinions, and I find that the 2 wavelengths you mentioned could be substituted with a white kelvin. You are coming to conclusions without getting a broad understanding of the technology, let alone this application. Please refrain from mis-guiding other's until you inform yourself more ...

 

[positivity]

Nice setup loolio

There's no doubt red and blue at the peaks work. I grew that way for a long time

I'm just sharing my opinion which there are a lot of. I recommend what works for me. A variety of advice gives a consumer more to go on, which can only be a good thing

Straying from the pack was the best thing I ever did.

Next run,instead of the blue, try throwing a vero 18 at 2700k or 4000k from Newark. 30watts for $18 shouldn't hurt too bad. If your feeling adventurous try adding the 12up osion deep red on a copper star at led tech.de. Run them both in series at 1a.

That's what I'd do. White with supplemental red. I'd actually prefer a higher white ratio but I'm sure that would work.

Just an idea..options are good right?

 

[MeanBean]

When there is a high photon density , the white/green light is a bit more important for photosynthesis (Notice PAR absorption charts are not sharp peaks like colored L.E.D.'s are classified, instead plant's prefer a more broad range, with plenty needed in the green/white...).

if you look at older G1 hydro grow lights they did include white. Then we found the only effective spectrum from that was 545nm green, so we replaced the white with 1 green diode. "thats all you need"

L.E.D. still put's out white light more efficient than any other source.Opinions are opinions, and I find that the 2 wavelengths you mentioned could be substituted with a white kelvin.

Not sure if I follow you, in my statement I said those 3 diode types were not needed. do not need any so no need for substitution.

Again using a full spectrum or anything close that is measured in kelvin is not too useful because only a small % has an effect on plant growth.

You are coming to conclusions without getting a broad understanding of the technology. let alone this application. Please refrain from mis-guiding other's until you inform yourself more ...

Actually I have a great understanding of the light posted at the beginning of this thread, and I just came here to give my opinion as other members have.

If your buying a light that small you want to be sure every diode is doing something for you.

The listing does not give you % of each diode type/spectrum so its hard to say what your even getting'

 

[Loollo]

if you look at older G1 hydro grow lights they did include white. Then we found the only effective spectrum from that was 545nm green, so we replaced the white with 1 green diode. "thats all you need"




Not sure if I follow you, in my statement I said those 3 diode types were not needed. do not need any so no need for substitution.

Again using a full spectrum or anything close that is measured in kelvin is not too useful because only a small % has an effect on plant growth.



Actually I have a great understanding of the light posted at the beginning of this thread, and I just came here to give my opinion as other members have.

If your buying a light that small you want to be sure every diode is doing something for you.

The listing does not give you % of each diode type/spectrum so its hard to say what your even getting'

You seem to have a deep know-how in led technology. What do you think of my two led 50w 630nm and 10w 460nm ? I must add something or i could harvest well with this setup ?

 

[Loollo]

Thank you Positivity

 

[positivity]

Meanbean

I gotta question for ya

If white is so junk

How come multiple all white/majority white cree grows have yielded 1g/w without even the need for scrogging?

I've verified this on my own, so I know the answer for myself..

Thats better than 99% of the precise spectrum grows out there...

The information, grows, and proof are all out on public forums.

You part of the tea party or something? Beliefs clouded by special interests?

I would appreciate an answer as to why an inefficient cree white does so well....

 

[Loollo]

Meanbean

How come multiple all white/majority white cree grows have yielded 1g/w without even the need for scrogging?

Sure, for example i see a guy harvest 8g with 9w white ikea leds !

So, i not well understood, do you think i can harvest well with my setup or do you think it's better add/replace white leds ?

P.s.: the guy of ikea leds writed in this post...Tebos !

 

[positivity]

I say finish it...get a result in first.

Then try using the bridgelux vero for around 18 bucks. Actually any efficient white. Cree, Philips, bridgelux, one of those. I just said bridgelux vero since it would fit well in your cob setup. Leave your red in there or upgrade it..white does seem to need a little help in flower

Here's a 120w of cree xml l2 all white. Inefficient my ass....

And to the original poster...lol. This is relevant. DIY is easy. UFO will cover 1.5' x 1.5' solidly...that's about it. This simple DIY covers 3' x 2' easily.

 

[Loollo]

I say finish it...get a result in first.

Here's a 120w of cree xml l2 all white. Inefficient my ass....

unappealable

I have just a 10-30-50w warm white, those

I would add the 10w for more sureness...also if i'm also curious to see what i will harvest with this setup...

 

[tebos]

Sure, for example i see a guy harvest 8g with 9w white ikea leds !

So, i not well understood, do you think i can harvest well with my setup or do you think it's better add/replace white leds ?

P.s.: the guy of ikea leds writed in this post...Tebos !

But they aren't from Ikea, Cree ftw


My next LED cab will run a red/blue heavy LED array though.