LED vs. HPS

[Loganr888]

are leds better then HPS and do you need differnt lights for each stage does anybody know i think im going to switch for power purpose but i need to know if you need differant lights and which types of leds anything would help and what siz LED will grow the same area as a 600w HPS thanks for any information

[stra8outtaWeed]

you can look at my album or my thread in my sig..i got some nice LED's :smokin:

[Loganr888]

but do the colors make a difference for stage or is it the same color the whole way threw need help on this i have to change from hps everyone said its the best thing since sliced bread any suggestions

[THContent]

From what I have heard, LED's are good for supplemental lighting, but NOT for primary, you should never stinge on lighting because yield will show you that you are lacking by the end.

HPS is definitely the right choice, start off with MH for veg, then when you go in to flowering, switch to HPS.

MH uses more of the blue spectrum of light, imitating that of the summer sky. HPS for more of the orange/red spectrum which the plants will use more during flowering (imitating the fall sky).

I would say stick with the MH/HPS, and if you wish, add LED as supplement. Growing solely on LED would not yield anything worth mentioning.

[Weezard]

From what I have heard, LED's are good for supplemental lighting, but NOT for primary, you should never stinge on lighting because yield will show you that you are lacking by the end.

HPS is definitely the right choice, start off with MH for veg, then when you go in to flowering, switch to HPS.

MH uses more of the blue spectrum of light, imitating that of the summer sky. HPS for more of the orange/red spectrum which the plants will use more during flowering (imitating the fall sky).

I would say stick with the MH/HPS, and if you wish, add LED as supplement. Growing solely on LED would not yield anything worth mentioning.


In this you are quite incorrect.
I have personally had excellent results.

See, now you have heard mention that they do produce.:)

Check out Str8s grow, then you will have at least seen that they can, indeed, produce.

Please do tell us what you actually know though.
That, is much more useful to everyone, yah?

No offense intended.
There is much to learn here.:cool:

Aloha,
Weezard

[Weezard]

but do the colors make a difference for stage ?or is it the same color the whole way threw need help on this i have to change from hps everyone said its the best thing since sliced bread any suggestions

Yes, Logan.
Whatever light you choose, a little extra red during flower helps trigger maturity and seems to add bud bulk as well, though I have no proof of the latter, it's just what I have read.

I have, however, personally found that cranking up the blue at onset of flowering can limit the pre-flower "stretch".
Changing the Red:Blue ratio is easy to do with LEDs.
It's the 3rd reason that I use them.

The first 2 being;

1. >half a buck per KWH.:mad:
And.
B. It gets hot here.

The 4th reason, I gotta admit, is the :cool:ness factor.:)


Aloha and good luck.

Weezard

[Weezard]

HELL NO! LED TECHNOLOGY WILL NEVER CATCH UP TO HID FOR GROWING CANNABIS! THERE IS NO REPLACEMENT FOR DISPLACEMENT, THE END!

Tsk!
Inside voice B.W., inside voice.
But, thank you for your opinion.

:D
Aloha,
Weezard

[stra8outtaWeed]

the problem is most people that have tried LED have fell into the "snake oil" sales of promising more than they can deliver....then there is the skill of the grower....i am glad we got some experts here to let me know that these LED's won't flower :D

[khyberkitsune]

HELL NO! LED TECHNOLOGY WILL NEVER CATCH UP TO HID FOR GROWING CANNABIS! THERE IS NO REPLACEMENT FOR DISPLACEMENT, THE END!

Where do I begin?

You're dead wrong.

LED versus HID in the EXACT SAME WATTAGE, LED wins every time. Proven time and time again.

For example, there's a video on youtube, doing a solid 90w LED versus 400w HPS.

At the end of it all, the 90w LED yielded 31g. The 400w HPS yielded 93g. Assuming yield increases linearly with power increase, a 270w LED would do THE EXACT SAME as 400w HPS.

That's just a bit over 5/8 the power usage for the same amount of product.

Also, for purely visual purposes, there's not a single HID on the market that can compete with Cree's 200+ lumens/watt LEDs.

Any further statements you'd like to make without posting any proof?

Hang on, I'll post a picture as well. Looks like my plants are doing just fine (minus the nute burn on the ones in the back right.) and starting to bud just as well.

[irydyum]

I'm going to have to agree. BW, ur a DB. If you are just going to regurgitate the same BS other people are slinging, do yourself a favor and zip it. You just make yourself sound like you wear a bib and a helmet.

Pic is day 20 under LED flowering.

BW, where's a pic of your show?

[THContent]

Thanks for clearing that up for me Weezard, I will be giving the LED's a try and see what kind of results I get compared to 600W under same conditions. Any advice on which ones to get?

[Weezard]

Thanks for clearing that up for me Weezard, I will be giving the LED's a try and see what kind of results I get compared to 600W under same conditions. Any advice on which ones to get?

The commercial led market sucks.

What a steaming load of marketing stank!
3 bands, 5, 8, closer shaves, betta eggs, FEH!
Greed and ignorance abound.

The best commercial unit seem to be the ones that Str8 is using.
But, that's not my personal experience, just observation mixed with some trust.
He used to grow under HPS.
Took some balls to change over, but it paid off.:thumbsup:

Wattage is not as important as using the most efficacious wavelengths for cannabis.

I have used 635nm. reds and 660nm. reds.
There was quite a difference.
More than enough to compensate for the lower electrical efficiency of the 660 emitters.

The blue frequencies seem less important wavelength-wise.
But ratio of blue to red is important.

Look-up "Calling out to Weezard for led advice" by Crunchypants.
Where-in, we build several very successful lights.
All of which are still in service.

While most folks were just looking to grow "as well as" HPS,
I reasoned, that once one exceed the amount of useful light that the plant can handle, the souce of the light is irrelevant.
My ambition was to outgrow sunlight, on a budget.:)

Wasted some energy trying to supply "missing wavelengths" that a plant just might pine for.
CFLs for white fill, far red in the "evening", UVb, all kine sing.
I was, as is my wont, overthinking it.
The girls were overjoyed with 2 wavelengths once the intensity crested 80k LUX.
I actually grew bigger plants under my dichroic "cake pan" lamp than I did under tropical sunlight!
Started with very similar clones.
In fairness, the LED girls were treated to extra CO2 .

You might like knowing that I started up with leds to prove that they did not work!:D

Could not be happier about being wrong in this case.
(Can not afford HPS power bill at our rates).
So, I'm a very happy LED camper.

They were not cheap to build, but the cost was amortised in less than a year!
So now, I'm set to save a fortune with them over the next 8 or 9 years.:jointsmile:

Pleased to meet you Mr. Content, I love talkin' to an open mind.:cool:

Aloha,
Weezard

[moody420]

I don't even know how any of these people can still honestly write a post about how LED's don't work!!! There are so many of us using ONLY LED and having great results!

To each their own, but please don't advise people that things aren't possible. We are all here to learn, and we all have our own experiences. Some of us alot more than others. Show some damn respect!

And to the enlightened basementwarrior.....you are right, LED will never be like HPS....LED's will never burn up your electicity and they will never catch your house on fire like HPS! I'm just saying, do a little research before opening your mouth like you have something worthwhile to say! :jointsmile:

[Weezard]

the problem is most people that have tried LED have fell into the "snake oil" sales of promising more than they can deliver....then there is the skill of the grower....i am glad we got some experts here to let me know that these LED's won't flower :D

@ Str8

Oh my goodness!
Holy f f f f f f f cow! :D
Wet lap! Wet lap!
I is droolin' like a hebivore in heat ovah heah.

I has gots to finagle a way to wrap a lung aroun' dat fine lady.:rastasmoke:
Good work!
I gives it :greenthumb::greenthumb::greenthumb::greenthumb:

Tried a "sacrificial limb" yet?

Da Weeze

@ Moody

Oh, yeah, fo' I fo'gets.
Looked at some of B. W.s udder posts.
He does not seem to be a 'tard, or a troll.
So, I'm guessin' dat was a joke, jus' to get us rollin'.:)
Worked a treat?:D

[irydyum]

Maybe he should stick to the CO threads then and leave the indoor growing to people who know what they are doing.

Putting a male in with females will make ur bud denser? Cmon now...

[moody420]

Da Weeze

@ Moody

Oh, yeah, fo' I fo'gets.
Looked at some of B. W.s udder posts.
He does not seem to be a 'tard, or a troll.
So, I'm guessin' dat was a joke, jus' to get us rollin'.:)
Worked a treat?:D

yeah, he got to me! What can I say....it's monday and I hadn't had my medicine yet! :jointsmile:

....all better now! :D

[bigsby]

are leds better then HPS and do you need differnt lights for each stage does anybody know i think im going to switch for power purpose but i need to know if you need differant lights and which types of leds anything would help and what siz LED will grow the same area as a 600w HPS thanks for any information

I think the only thing that has not been answered here is what wattage LED would you need to replace your 600w HID. There are others here who can answer that far better than I. By way of semi educated guess I'm gong to say 350 - 400w will get you there.

For me it was all about power, heat, and safety. I'm not growing for commercial purposes so the upfront investment isn't much of an issue. I can see if you want to fill a warehouse that it would be hard to stomach the initial investment regardless of the long run cost benefit. Actually, no, I take that back. Anyone doing that kind of setup should be willing to take the time to figure it out. The hassles of heat mitigation alone that LEDs sidestep should be enough to cause any large scale grower to take a second look. Coupled with with long term cost savings it's almost a no brainer. Now, I can also see why people who started on HIDs stick with them, though the seemingly testosterone-fueled mind lock that sets in when this discussion comes up is not so easy to understand...

Let us know where you end up and how it grows.

[THContent]

str8, gimme some specs and a source on where I can pick up a few panels of LED's. I will definitely give them a shot in comparison to my HPS setup. Also weigh the relevant costs of each vs. that of the output of the plants as far as yield.

[Weezard]

Maybe he should stick to the CO threads then and leave the indoor growing to people who know what they are doing.

Putting a male in with females will make ur bud denser? Cmon now...



Sure will make 'em heavier, yah!:D

Hmm, Fo'got dat one.
Does seem pretty fnordish now dat ya point it out.
Li'l too potentially harmful to be another jape.

I'm leanin' mo' towards, guy's a "jerk" alla time now.
Sorry, Moody, Go gettem.:)


Aloha,
St. Wingnut da mild.

[irydyum]

Fnordish indeed St. Wingnut.

As to what will replace a 600w HPS, there are so many variables that no one can give you a straight answer. That's the reason it hasn't been answered yet.

Many people growing with LED's now, not very many doing controlled side by sides to give you hard data about it. It's going to come down to what works best for the individual.

I'm sorry it can't be more cut and dry, believe me, I'm sure we all would love a concise definitive answer. People can only give you data from their grow, and you have to run with that and make a decision about it.

No one told any of us with LED's that they would replace anything. Most of us stumbled on them as a matter of curiosity first and foremost. We are in the virgin days my friend, I got my hands on some because I don't want to be bringing up the rear, I'm much happier to be the point man discovering new territory.

So, how much LED lighting can you afford is truly the question. If you can afford 600w, get 600. If you can only afford 90w UFO, get it and try it. No one will know better what you can do with them than you:thumbsup:

Give us another 5 years, maybe then we can have some solid data to work with.

[bigsby]

Fnordish indeed St. Wingnut.

As to what will replace a 600w HPS, there are so many variables that no one can give you a straight answer. That's the reason it hasn't been answered yet.

OK fair enough but we can be pretty sure that he will not come close to the results he is seeking with that 90w UFO. To achieve a suitable result and assuming that he has his shit dialed in, is willing to learn through a few grows, yatta yatta yatta... he will need at least 350w. Is that fair to assert? And I'm wearing my n00b t-shirt as we speak so you know, correct me if needed. Just got my lights this week!

[irydyum]

Same formula applies to success of all lights. Grams/Watt

So lets say you get a pound with a 600w. That comes out to about .75g/watt.

Str8 was growing with LED's and managed about .75g/watt as well. He was using 450 watts. (and much more experience using them than most)

Same g/w ratio, less overall wattage though.

Really, I would expect a noob to come in more around the .5g/watt arena, but the same principle holds true no matter the light type.

So if you want to replace a 600, and get the same yield, it would stand to reason that the wattage you put in is going to determine the grams you get out.

I believe that's the only way we can compare nuggets to nuggets as far as the 2 types of light are concerned.

I'm sure St. Wingnut can chime in with some numbers of his own that may screw my whole hypothesis up. I would still love to hear em tho:D

[Weezard]

OK fair enough but we can be pretty sure that he will not come close to the results he is seeking with that 90w UFO. To achieve a suitable result and assuming that he has his shit dialed in, is willing to learn through a few grows, yatta yatta yatta... he will need at least 350w. Is that fair to assert? And I'm wearing my n00b t-shirt as we speak so you know, correct me if needed. Just got my lights this week!

You have been paying attention, Bigs.:thumbsup:

350 is just about it. Close as I can figger so far.

Have not been quantifying, very much.

Mine is a personal, and relatively public grow, so I must limit my yield to stay legal.

Aloha Bigsby.
Been enjoying your posts.

[stra8outtaWeed]

Iry is correct on my yield....in a 3x3 tray...450w of LED will flower a 4x4 very easy increasing the growing space by 44% so yield is a variable...as per yield per sq ft of growing space i am getting approx 35gr per sq ft....that is probably the most accurate way to determine yield!

thanks Weez...you got me rollin bro...just like you...a little co2 never hurts :D

Thc~ hit my yahoo and i got the best deal on these lights for ya :thumbsup:

[Weezard]

Same formula applies to success of all lights. Grams/Watt

So lets say you get a pound with a 600w. That comes out to about .75g/watt.

Str8 was growing with LED's and managed about .75g/watt as well. He was using 450 watts. (and much more experience using them than most)

Same g/w ratio, less overall wattage though.

Really, I would expect a noob to come in more around the .5g/watt arena, but the same principle holds true no matter the light type.

So if you want to replace a 600, and get the same yield, it would stand to reason that the wattage you put in is going to determine the grams you get out.

I believe that's the only way we can compare nuggets to nuggets as far as the 2 types of light are concerned.

I'm sure St. Wingnut can chime in with some numbers of his own that may screw my whole hypothesis up. I would still love to hear em tho:D


Sounds pretty lucid to me , ya rare element.:D
No flies on youse guys
Dang! Got da serious munchies, few flies woulda hit da spot.

Alas:(, an' Aloha:).
Da 'zard

[khyberkitsune]

"I don't even know how any of these people can still honestly write a post about how LED's don't work!!! There are so many of us using ONLY LED and having great results! "

Man, you should see the LIC over at skunkskool. I posted there saying "LED might not belong in the Low-Intensity Club any longer" and this one troll (that believes burning a plant is impossible, and that a plants roots will suberize and save it magically, not realizing damage has to be done for suberization to happen, and usually once burn happens, it spreads before the plant can respond,) IMMEDIATELY jumps in and goes "There is no proof."

I posted up Str8's 5/18 picture and said "Really? You might want to get your head out of the sand" in so many words. ;)

It's sad. Very sad. That particular troll is actually the reason I have the job I have, by arguing with him and completely shutting him down, I got hired out of nowhere by some bloke in the UK!

[bigsby]

Same formula applies to success of all lights. Grams/Watt

So lets say you get a pound with a 600w. That comes out to about .75g/watt.

Str8 was growing with LED's and managed about .75g/watt as well. He was using 450 watts. (and much more experience using them than most)

Same g/w ratio, less overall wattage though.

Really, I would expect a noob to come in more around the .5g/watt arena, but the same principle holds true no matter the light type.

So if you want to replace a 600, and get the same yield, it would stand to reason that the wattage you put in is going to determine the grams you get out.

I believe that's the only way we can compare nuggets to nuggets as far as the 2 types of light are concerned.

I'm sure St. Wingnut can chime in with some numbers of his own that may screw my whole hypothesis up. I would still love to hear em tho:D

You've explained this to us before - I recall reading your very similar explanation in a different thread. Thanks for the reinforced learning. Works a charm.

[irydyum]

At least that means I'm consistent, I'll take that:S5:

I'm so well medicated most of the time, if I wasn't, I probably wouldn't have stayed around here very long. Much different type of crowd here I'm beginning to learn. But this is where I started, and I'm old school at heart. Some loyalties will never be lost in me.

Speaking of LED's, check this frosty lil snatcheroo out:

[attachment=o247846]

About day 25 under LED there, it's up to my standards so far, and I'm a total growsnob.

[THContent]

So after checking out the prices on LED's, I think I will wait for the prices to drop... Not worth it. I see some cheap knock off LED's on eBay you know, the ones that resemble Lite Brite, but I also saw the UFO types (the ones that work good - or so it seems), at least $200 for 90W which compares to 400W HPS, no thanks... I'll pass.. And stick to my 600W HPS that cost $125.00.

There has also been alot of talk on many different boards on how LED is good for vegging, but sucks for flowering. I understand the benefits of using LED, less power consumption, better stealth, less heat emissions, overall costs less than HPS to run. But when it comes to yield, and overall time it takes to get the job done lots of people say that HPS is still the best.

I still have not seen concrete proof that LED's outperform HPS on the same playing field, I would love to see it, but I have not yet, and I am trying to better understand why is it that LED's cost more than HPS... That is something I really cannot understand since they are only pennies on the dollar from manufacturers in China. I am not talking about the cheap LED's either.

And it also seems, you cant grow as many plants under 1 UFO as you can an HPS system that can cover at least 4 plants with a 600W system and still yield big. How many plants can you get under one small UFO without losing light efficiency, 2?

[THContent]

I also left out, HID systems will penetrate the canopy more efficiently than LED's

How come people compare say 400W of CFL and expect the same light output as an HPS at 400W, it is just straight up madness...

[THContent]

Don't get me wrong, I think LED's are obviously a great thing in terms of lighting and compare well with all other lights in vegging, but flowering still seems questionable. I am by no means bashing, just trying to understand a little more since I am new to LED's.

LED's are cost efficient, are better per watt than HPS, less heat, lots of long term benefits to growing. But what is the time frame and the yield compared to HPS? Why does LED not penetrate as good as HPS? How come most hydroponic shops don't offer LED setups for lighting, they mainly focus on their HPS systems and boast how good they are over everything on the market, not to sound like a dick but I would believe them over anyone on forums, they are running a business and they are in it to make money. So why not push the most cost efficient product, unless there was also downsides to it?

[THContent]

Well I just got off the phone with HTGSupply (and you guys are welcome to call them)

I asked the guy what is the absolute best lighting from start to finish, vegging to flowering. Would it be an LED setup or HID setup. And this is exactly what he said:

"The best system overall would be an HPS setup because you would get more lumen output, more intense light, better coverage, and better penetration throughout. Now if you were in a very small confined grow area, then LED would do fine overall I would rather stick with HPS, but side by side comparison the HPS system would have a better overall yield than that of the LED setup, and would take less time. The only downside to HPS would be the amount of heat that it generates." Exact words from the mouth of someone at HTGSupply.

Here is the phone number I called to get this answer:

1-866-710-GROW (4769)
High Tech Garden Supply (http://htgsupply.com/)

They offer both LED and HPS systems. So I trust his answer, you are welcome to call and ask them the same question.

[bigsby]

Reminds me of that Dead tune Loose Lucy - Round and Round and Round...

Most people here are small growers. That is one of the appeals of this site.

Just b/c he works for a grow shop doesn't make him an expert. His comments on lumen output indicates he is giving an answer that has been heard by others. I'll give him coverage and penetration but those are issues that can be dealt with via super cropping. On the downside of HID lighting he failed to mention the costs - electric consumption and bulb replacement. He also failed to mention increased fire hazard.

I am going to leave it to others to point out other flaws in his answer vis a vis lumens as they will cover it much more accurately.

[THContent]

bigsby I understand where you are coming from, as I said earlier that of course cost and heat will play a role with HID lighting. But why would he sell me something cheaper, and comment on its effectiveness over LED when he could have just as easily sold the LED and made more money from it. Either he is not well informed, or he knows what he is talking about.

I see alot of threads on LED vs HPS and I gotta say its quite sickening, because 1, most of the people that comment on those threads are the same people that sell LED systems... hmm big surprise! So of course there will always be talk about how HID systems generate alot of heat, and cost more to run than LED's. That is something that I will agree with, but when it comes down to it, overall yield from a LED grow side by side to an HPS grow I would like to see them say that hands down LED will produce more, we all know that is complete and utter bs. I am no expert on plant physiology etc, but I do know that HPS and MH imitate the sun better than anything out there.

If you look on many boards, not just this one, there are similar discussions about LED and HPS and majority of people agree that HPS is the best. Why would people make such claims? I will look more into it, and in the mean time I am going to call local nursery's and see where they stand on this subject.

I use HPS, so I can comment on how well it works, I have seen many grows from MH/HPS, and I have seen a couple from LED strictly, and the LED grows look lanky and less dense... maybe there is some underlying reason for this? Look at just about every HPS grow, all the buds are dense and thick...


And to be completely honest, how many plants can you really fit under one LED UFO fixture, doesn't look like much, and we both agree that penetration would be an issue so therefore you would need additional LED on the sides, to penetrate which in reality would probably cost the same as an HPS system to run. So really, lets take all factors in to consideration, not just the downsides to HPS and all the upsides to LED.

As for bulb replacement, once every one or two years, vs the amount of bud you grow = minimal cost. And fire hazards, well, if you have your setup properly fire hazards are not an issue. Same goes for a 60W light bulb on your coffee table. And to compensate for heat, just get ducting, an inline fan, and your set, no more heat.

[stra8outtaWeed]

maybe the guy at HTG could look at these pics and tell me why won't LED lights flower!?!?!?:smokin:

[THContent]

Hey I never said they wouldn't flower, they just won't be anything compared to an HPS flower, that's all. And how long have those been flowering for?

[stra8outtaWeed]

Hey I never said they wouldn't flower, they just won't be anything compared to an HPS flower, that's all. And how long have those been flowering for?
day 63...would have been chopped today but do to personal scheduling issues they will be coming down on tuesday :D

[THContent]

str8, where did you gut yours from, I want to buy the exact same ones so I can do a side by side and have almost like a mythbuster thing and compare overall cost to time and yield for each system, this way we know what is more of an investment to have.

Please keep in mind I am not bashing LED's just learning as I go. And letting you guys know what I have heard. I am intrigued by the idea of course, and the cost effectiveness, but overall yield is what worries me, and the extra time it might take.

Please lemme know where you go those, I want a set to test run.


For an LED grow, I am definitely impressed, since overall cost won't be much in terms of monthly electric usage.

[stra8outtaWeed]

i got mine from the manufacturer in China :D...these are hard to find...and grow shops carry most of the same crap on ebay so i got a bunch for friends and myself and opened account so i could get more for others...they are only sold commercially....you can hit my yahoo or skype :smokin:

[khyberkitsune]

By far, Stra8's panels are superior. He's rolling 3w diodes in those panels. I've likely got the top-class 1w panels, given my research and raw power output and balance.

[THContent]

How do you guys feel about this:

600W LED Grow Lights (Quad-Band) - China Led Grow Light,Led Grow Lamp,Led Plant Grow Light in LED Light (http://superstarled2010.en.made-in-china.com/product/YeIxoDkdCbhA/China-600W-LED-Grow-Lights-Quad-Band-.html)

or this:

600W LED Grow Light /LED Grow Lamp/Grow Light (SP-ZB600) - China Led Grow Lights,Led Grow Lamp,Grow Lights in LED Light (http://superstarled2010.en.made-in-china.com/product/LbgxUFnlbohj/China-600W-LED-Grow-Light-LED-Grow-Lamp-Grow-Light-SP-ZB600-.html)

or last but not least:

China 600W LED Grow Lamp. Shenzhen Manufacturer (http://bysenled.manufacturer.globalsources.com/si/6008832109147/pdtl/LED-grow/1019466774/600W-LED-Grow-Lamp.htm)

Which one should I go for?

[THContent]

I found this one, it rocks 3W diodes :) min order 5, which I will use.

Super 100% 3w chip full spectrum 600w led grow light with extreme flowering and fruiting products, buy Super 100% 3w chip full spectrum 600w led grow light with extreme flowering and fruiting products from alibaba.com (http://www.alibaba.com/product-gs/310581374/Super_100_3w_chip_full_spectrum.html)

[bigsby]

That's a nice looking panel. What's the cost?

I'm thinking you are going to want some diodes in the 680nm wavelength.

[khyberkitsune]

In the first set of links you posted, THContent, they're all poorly-balanced panels, and one uses rather wasteful orange diodes.

In the second link - it says it's using 3w diodes, but then it says 576 pcs of diodes and 600watts - AKA you're being lied to in the sale or they're under-driving the diodes, which DRASTICALLY reduces efficiency. It is also using wasteful orange diodes.

[THContent]

So I wanna stick to Red and Blue strictly? Red being 660nm, and the Blue being 460nm?

I know I want the 3W diodes, not the 1W.

Damn chinese, they can't speak english right, let alone get the specs. Should have outsource to the japs.

[THContent]

Found this one, supposedly everything looks right:

LED Grow Lamp, Procyon 100 LED Grow Light - China led grow lamp,led grow light,led plant growing light in Semiconductor (http://renatec.en.made-in-china.com/product/BqWnhwTOfLcz/China-LED-Grow-Lamp-Procyon-100-LED-Grow-Light.html)

and this:

Procyon 100 - Award Winning LED Grow Light Products offered by Indoor Agriculture, LLC USA (http://www.tradekey.com/product_view/id/632355.htm)

I am gonna go with this:

Procyon Depot :: Purchase (http://www.procyondepot.com/purchase.htm)

[khyberkitsune]

Found this one, supposedly everything looks right:

LED Grow Lamp, Procyon 100 LED Grow Light - China led grow lamp,led grow light,led plant growing light in Semiconductor (http://renatec.en.made-in-china.com/product/BqWnhwTOfLcz/China-LED-Grow-Lamp-Procyon-100-LED-Grow-Light.html)

and this:

Procyon 100 - Award Winning LED Grow Light Products offered by Indoor Agriculture, LLC USA (http://www.tradekey.com/product_view/id/632355.htm)

I am gonna go with this:

Procyon Depot :: Purchase (http://www.procyondepot.com/purchase.htm)

While dual-band works well, what I worry about is the fact that the one you intend to purchase shows 630nm for the primary red - not really good for good flowering like 660nm.

Also, that 100w panel is more expensive than my own 120w. I'd almost daresay you'd get better results with mine versus that. That one might provide better penetration power, but I think I'd win on overall yield.

Seriously, get Stra8 to get you some of what he uses before you go looking for the online specials. He's already got a great working formula down.

[washmedical]

Packaging Detail: Packing is very pretty


haha

[Purple Daddy]

Interesting thread, since I have too many plants I'm moving two into a closet and I'm going to finish them under two 90W UFO's and four banks of dual 40W flourescent shop lights. For now I'm moving them into the garage at 6 p/m each night until I know they are both female then probably going into the closet to finish.

[JustAnotherHead]

you can look at my album or my thread in my sig..i got some nice LED's :smokin:

OMG! Those don't look like airy loose buds to me. Impressive. How much $$$ do you have invested in the LED's. The heat from all these HID's is killing me!

[khyberkitsune]

OMG! Those don't look like airy loose buds to me. Impressive. How much $$$ do you have invested in the LED's. The heat from all these HID's is killing me!

Those were grown using some WEX-C150 units with Stra8's custom spectral choice. He invested a fair amount in it.

[zandramas]

LEDs ARE TOTAL BS!! I KNOW THE BUDS IN YOUR PICS WERE GROWN WITH HPS AND THE LEDs WERE ADDED LATER FOR THE PHOTOSHOOT!

Just kidding.

Hi guys, this is my first time posting on these forums. Happy to have found what seems to be a cool place.

I'm setting up, ahem, attempting to set up my first grow. I did a little research and thought I'd found a decent 90w LED for a really small cab grow. However when the light arrived I saw that 16 of the 90 1w diodes seemed to not be working. I contacted the company and was told that those 16 diodes are infrared, and therefore the light is not visible.

C'mon. Infrared is only going to give off heat, no? Am I wrong, can it be used to grow? Or is the company trying to pull a fast one?

What do you guys think?

[3ntH3ad]

Where do I begin?

You're dead wrong.

LED versus HID in the EXACT SAME WATTAGE, LED wins every time. Proven time and time again.

For example, there's a video on youtube, doing a solid 90w LED versus 400w HPS.

At the end of it all, the 90w LED yielded 31g. The 400w HPS yielded 93g. Assuming yield increases linearly with power increase, a 270w LED would do THE EXACT SAME as 400w HPS.

That's just a bit over 5/8 the power usage for the same amount of product.

Also, for purely visual purposes, there's not a single HID on the market that can compete with Cree's 200+ lumens/watt LEDs.

Any further statements you'd like to make without posting any proof?

Hang on, I'll post a picture as well. Looks like my plants are doing just fine (minus the nute burn on the ones in the back right.) and starting to bud just as well.

WEll you sold me on using LEDs....even if they only marginally produced the same as a HPS, the energy saving would be well worth it. Not to mention the lowered risk of fire or burning out the plants. I am totally new to all this and have been asking a lot of questions of lights and hydroponics (http://www.greenhabitathydroponics.com/) systems, but the few people I have spoken with at the hydroponics store didn't even mention the LEDs...I guess they want to sell off their old stock of bulbs before they start selling the LEDs? Thanks again mandingo. :-)