cannawizard
Well-Known Member
*taking everything into consideration., thnx for the input
Led Growing Is The Way Of The Future My Friends
- Thread starter curly604
- Start date
kentrugrolights
Member
I ran 3 600watt leds in my flower room small buds .I put 3 1000hps in same room i got 3 times the buds i run 4 300watt leds in my veg room and a 2x4 led i put together they work good in veg room i get my lights from china to have alight you would have to put 1200 leds in a light to get 80,000 lums the cost to builled it would be $7000.00 for one light you couldnt go into the room with it on it would kill your eyes kentrugrolights
curly604
Well-Known Member
no offense bro but but you probly got small buds cause you were using the wrong diodes.what make are they? what size diodes did you use? what spectrum were they? so many variables bro. and luminens is not the only thing your looking for par and other factors are involved.
albsure
Active Member
Kind of late to the party, I didn't read all the pages of this post so maybe I missed someone else posting this but did anyone read this guys' site:http://www.ledgrow.eu/ ? Interesting reading and results. He also has a good page he calls F&T or Facts and Theory on the site about leds.
cannawizard
Well-Known Member
*nice read.. cool DIYs
0Pacific0Northwest0
Active Member
can you provide a link? or cite your source?
Harrekin
Well-Known Member
Shilling a bit are we? No biased advertising thanks.
albsure
Active Member
Glad you liked it. It's nice to know at least one person read it. It cleared up a lot of the confusion I had about LED's. It appears that there is so much misinformation about LED's that it was nice to read something from a guy who has experimented a great deal using and building his own LED panels. He tells it straight; especially on the F&T page. This is a guy who builds this stuff and tells you that a lot of claims of superiority that people claim for LED's are lies but he says it from a position of experience and obvious knowledge. He doesn't say LED's are crap by any means but he does tell you straight about the claims. Great read.
albsure
Active Member
Dispelling the Myths about LED's from my linked site above. All of the photos didn't copy but some good info. did. Go to the site to see the whole article. Subject: Popular LedMyths
LEDs are more efficient than HPS. Is not true!
LEDs are currently less efficient than HPS, especially the blue ones and they are many times more expensive. A typical HPS gives about 140 Lumen/Watt, where the best LEDs still are at 100 Lumen/Watt. The often-heard statement that LEDs produce less heat than normal assimilation lighting is a misconception. Because the energy conversion is worse than in HPS, the heat per watt still higher than that of HPS. It begins to approach each other but just for the red LEDs and white LEDs. The heat is better to handle because it does not come out the front as radiation, but is concentrated on the back of the chip and can be lead to proper heatsinks.
LEDs are more efficient because more light at the most efficient parts of the spectrum is used. Is not true!
All photons in the visible light are used at almost the same efficiency. There is a slight decrease for the green photons, but it is no way as bad as Led-panel salesmen would like you to believe. (For fun you can compare this official graph with the ones found on Led-panel sites)
Here is the light-output of a typical HPS bulb:
As you can see it matches the optimal spectrum quite nicely, using LEDs will not improve this very much. HPS's are really very good lights. LEDs are succesfully used in special horticultural applications but not (yet) to replace horticultural lamps, it will probably take 5-10 years until they do.
LEDs have to be placed within a few cm of the plants. Is not true!
Light does not lose noticable strengh while travelling, but you have to make sure it is focused properly. Most LEDs have an angle of 120 degrees, you can use lenses or reflectors to make a more narrow beam. Lenses create lightlosses of at least 15%, reflectors only effect the light that is send to the sides and are therefore better.
Some people think LED-light has less "penetrating power", which would be another reason to put the LEDs as closely as possible to the plants. Light = light, the penetrating power of a Red photon produced by HPS will be the same as that produced by a LED.
Subject: Led Facts
The light efficiency produced by a LED depends highly on the working temparature, keep the temperature as low as possible by using adequate heatsinks. Recommended is a temperature lower than 30 degrees Celsius, 86 F.
The light efficiency produced by a LED depends highly on the current, using the LEDs at maximum current can reduce the efficiency dramatically, this depends highly on the model of the LED, the small Rebel Leds I'm using have a whopping 40% better efficiency at 350 mA than at 700 mA. For the K2's this difference is about 14%.
Led specifications are usually presented to look great. Tricks like measuring the amount of Lumen at a given current and temperature, during only a fraction of a second ( = no heat effects) are widely used.
LEDs have an exceptionally long life (40,000 hours) and they are very resistant to bumps and vibrations. Both life and light output are negatively affected by higher temperature.
LEDs are available with different emission spectra, which make it possible for processes to send light of different wavelengths. You can control the shape of the plants by using different mixtures of Red/Far-Red and Blue, for both the vegetative and flowering stage. See the document about Light Color below.
With LEDs it is easy to control the light and get it where you want it. You can get all kinds of lenses, just remember you lose at least 15% light because it passes a plastic or glass object.
LEDs are safe since they contain no glass and operate at a low voltage.
The intensity of LEDs can easily be controlled with dimmers.
LEDs are small and manageable, this enables them to be placed in rows at the bottom or sides of the plants, or to create 2 rooms on top of each other.
LEDs radiate almost no heat to the front, therefore the distance from the plants may be very short.
The impact to the environment outside the greenhouse can be significantly reduced, which is an important environmental aspect.
Subject: Checking out the UFO
Got the UFO today, I bought it at www.ledlightsorient.com, including shipping it cost me 180,- Euro, about 250 U$. It is a 90 watt LGL0505, it looks like a well developed product, on the inside it is build reasonably rigid. The packaging is ok, and the email response from the supplier is very good.
Lets have a look at the claims that are made by the supplier:
Benefits of our LED grow lights are as follow:
95% energy of LEDs can be absorbed by plants, but only 10% by HPS or MHS. This is a damn lie.
It saves 70% to 90% in energy consumption compared to fluorescent tubes, HPS or MHS. This is another damn lie.
Totally 90 pieces of 1 Watt Led produce 3800 Lumen.
Hmm, I do not think so, I measured the amount of Lux coming out of the 90 Watt UFO and it is definitely less than the present 60 Watt system I'm using for Set-up 6, which puts out about 2100 Lumen while in flowering position. (18 * 85 + 12 * 38 = 1986 Lumen for vegging)
Low heat generation. Reduce grow room temperature 15 degrees compare to HPS or MHS. Not if you want to have the same amount of light for your plants, then you will have to fill your room with UFO's, probably generating about twice as much heat as with your old HPS's.
Nearly no maintaining. Maybe, but I wonder if the cooling fans will last very long.
High power LED estimate to last 50,000 hours. Yes, but the light output will be reduced to about 70% towards the end of the lifetime.
Conclusion: Considering the low price it is a rather good product, maybe the best Ledgrow system on the market today. But it is a shame that the huge claims and promises; "replaces a 400 Watt HPS" are a pack of damn lies. Just as with all other Ledgrow products out there.
Usefull documents:
About HPS lights
About lightcolor for plants
Usefull links:
Lumileds, produce the Rebel and K2 I'm using in my Set-ups
Cree, Led manufacturer, produce the very nice XLamp
Edison, Led manufacturer, interesting Farred Leds
Osram, they produce the very nice Golden Dragon LED
Carclo, Lenses manufacturer
L2-Optics, Lenses manufacturor
Farnell, great supplier of LEDs and Lenses
These pages are sponsored by the Bonsai Hero Trimming Tool
LEDs are more efficient than HPS. Is not true!
LEDs are currently less efficient than HPS, especially the blue ones and they are many times more expensive. A typical HPS gives about 140 Lumen/Watt, where the best LEDs still are at 100 Lumen/Watt. The often-heard statement that LEDs produce less heat than normal assimilation lighting is a misconception. Because the energy conversion is worse than in HPS, the heat per watt still higher than that of HPS. It begins to approach each other but just for the red LEDs and white LEDs. The heat is better to handle because it does not come out the front as radiation, but is concentrated on the back of the chip and can be lead to proper heatsinks.
LEDs are more efficient because more light at the most efficient parts of the spectrum is used. Is not true!
All photons in the visible light are used at almost the same efficiency. There is a slight decrease for the green photons, but it is no way as bad as Led-panel salesmen would like you to believe. (For fun you can compare this official graph with the ones found on Led-panel sites)
Here is the light-output of a typical HPS bulb:
As you can see it matches the optimal spectrum quite nicely, using LEDs will not improve this very much. HPS's are really very good lights. LEDs are succesfully used in special horticultural applications but not (yet) to replace horticultural lamps, it will probably take 5-10 years until they do.
LEDs have to be placed within a few cm of the plants. Is not true!
Light does not lose noticable strengh while travelling, but you have to make sure it is focused properly. Most LEDs have an angle of 120 degrees, you can use lenses or reflectors to make a more narrow beam. Lenses create lightlosses of at least 15%, reflectors only effect the light that is send to the sides and are therefore better.
Some people think LED-light has less "penetrating power", which would be another reason to put the LEDs as closely as possible to the plants. Light = light, the penetrating power of a Red photon produced by HPS will be the same as that produced by a LED.
Subject: Led Facts
The light efficiency produced by a LED depends highly on the working temparature, keep the temperature as low as possible by using adequate heatsinks. Recommended is a temperature lower than 30 degrees Celsius, 86 F.
The light efficiency produced by a LED depends highly on the current, using the LEDs at maximum current can reduce the efficiency dramatically, this depends highly on the model of the LED, the small Rebel Leds I'm using have a whopping 40% better efficiency at 350 mA than at 700 mA. For the K2's this difference is about 14%.
Led specifications are usually presented to look great. Tricks like measuring the amount of Lumen at a given current and temperature, during only a fraction of a second ( = no heat effects) are widely used.
LEDs have an exceptionally long life (40,000 hours) and they are very resistant to bumps and vibrations. Both life and light output are negatively affected by higher temperature.
LEDs are available with different emission spectra, which make it possible for processes to send light of different wavelengths. You can control the shape of the plants by using different mixtures of Red/Far-Red and Blue, for both the vegetative and flowering stage. See the document about Light Color below.
With LEDs it is easy to control the light and get it where you want it. You can get all kinds of lenses, just remember you lose at least 15% light because it passes a plastic or glass object.
LEDs are safe since they contain no glass and operate at a low voltage.
The intensity of LEDs can easily be controlled with dimmers.
LEDs are small and manageable, this enables them to be placed in rows at the bottom or sides of the plants, or to create 2 rooms on top of each other.
LEDs radiate almost no heat to the front, therefore the distance from the plants may be very short.
The impact to the environment outside the greenhouse can be significantly reduced, which is an important environmental aspect.
Subject: Checking out the UFO
Got the UFO today, I bought it at www.ledlightsorient.com, including shipping it cost me 180,- Euro, about 250 U$. It is a 90 watt LGL0505, it looks like a well developed product, on the inside it is build reasonably rigid. The packaging is ok, and the email response from the supplier is very good.
Lets have a look at the claims that are made by the supplier:
Benefits of our LED grow lights are as follow:
95% energy of LEDs can be absorbed by plants, but only 10% by HPS or MHS. This is a damn lie.
It saves 70% to 90% in energy consumption compared to fluorescent tubes, HPS or MHS. This is another damn lie.
Totally 90 pieces of 1 Watt Led produce 3800 Lumen.
Hmm, I do not think so, I measured the amount of Lux coming out of the 90 Watt UFO and it is definitely less than the present 60 Watt system I'm using for Set-up 6, which puts out about 2100 Lumen while in flowering position. (18 * 85 + 12 * 38 = 1986 Lumen for vegging)
Low heat generation. Reduce grow room temperature 15 degrees compare to HPS or MHS. Not if you want to have the same amount of light for your plants, then you will have to fill your room with UFO's, probably generating about twice as much heat as with your old HPS's.
Nearly no maintaining. Maybe, but I wonder if the cooling fans will last very long.
High power LED estimate to last 50,000 hours. Yes, but the light output will be reduced to about 70% towards the end of the lifetime.
Conclusion: Considering the low price it is a rather good product, maybe the best Ledgrow system on the market today. But it is a shame that the huge claims and promises; "replaces a 400 Watt HPS" are a pack of damn lies. Just as with all other Ledgrow products out there.
Usefull documents:
About HPS lights
About lightcolor for plants
Usefull links:
Lumileds, produce the Rebel and K2 I'm using in my Set-ups
Cree, Led manufacturer, produce the very nice XLamp
Edison, Led manufacturer, interesting Farred Leds
Osram, they produce the very nice Golden Dragon LED
Carclo, Lenses manufacturer
L2-Optics, Lenses manufacturor
Farnell, great supplier of LEDs and Lenses
These pages are sponsored by the Bonsai Hero Trimming Tool
cannawizard
Well-Known Member
*bump
puffenuff
Well-Known Member
Rockin my new 200w diamond series from advanced led. So far the light looks like it's going to be killer. More intense than my 180w and runs much more quiet. Finishing up the last few weeks with both lights on, then i'll start a new grow using both the 200w and 180w together, with plans to buy another 200w to replace the 180 and use the 180w in my veg chamber replacing the t5s. Eventually this will all replace my 600w hps.
puffenuff
Well-Known Member
Sweet, which ones did u get? Diamond + kessils found like a winning combination to me, can't wait to see your setup!*got some diamonds panels too, gonna use them w/ a mix of kessils
--cheers
View attachment 1773064
cannawizard
Well-Known Member
*got the 700w eerr 800w.. umm gonna have to double check that..hehe a bit baked atm
--and the kessils are 350hds
(since their 'spinner' isnt out yet, i got someone to pre-fab me one for the time being)
puffenuff
Well-Known Member
Must be the 800w, that thing is going to be a beast of a light. I'm following some guy's 800w diamond grow on another forum and it is doing a nice job. Sounds like an awesome setup, how many kessils will you be using in the mix?*got the 700w eerr 800w.. umm gonna have to double check that..hehe a bit baked atm
--and the kessils are 350hds
(since their 'spinner' isnt out yet, i got someone to pre-fab me one for the time being)
the uk greek
Active Member
Hi guys, could anyone point me towards some decent LED Grow lights on sale in the UK?
I'm going to start reading this full thread when I have a bit more time, but any help in the mean time is appreciated.
I'm going to start reading this full thread when I have a bit more time, but any help in the mean time is appreciated.
