Full Version: Led Lights
My missus has just brought a led light from morrisons for £3. It has 48 bright white leds. I went straight out and bought a couple more my intention being to use them for night fishing instead of carrying a big tilley lamp around and also for camping. I thought some of you led growers might like to take a look to suppliment your lighting, RK
Hi
Is there a link or photo we can see?
dirk
Is there a link or photo we can see?
dirk
Thanks .. I think I'll be nipping up there later - Ive been paying 20p each for ultrabright white LEDs.
But they'll be for fishing and camping too
But they'll be for fishing and camping too
The LED lights you purchased are pretty much useless, 
for growing plants that is. For the plant to produce ATP during the light reactions it uses a "site" called P680, which uses 680nm light to be converted into chemical energy. 680nm light is red, and they actual wavelength that has the greatest absorbance is around 665, since "chlorophyll a" uses florescence to lengthen the wavelength so it can be absorbed. A typical "cool white" light will produce light in the blue to yellow region.
This light may be useful for controlling direction of growth, since there are pigments which absorb blue light to produce hormones and tell the plant which direction to grow. If your stem is getting weak, or you want the plant to grow in a specific direction then the light should do its job. Other than this the light will not contribute significantly to the growth of the plant.
for growing plants that is. For the plant to produce ATP during the light reactions it uses a "site" called P680, which uses 680nm light to be converted into chemical energy. 680nm light is red, and they actual wavelength that has the greatest absorbance is around 665, since "chlorophyll a" uses florescence to lengthen the wavelength so it can be absorbed. A typical "cool white" light will produce light in the blue to yellow region. This light may be useful for controlling direction of growth, since there are pigments which absorb blue light to produce hormones and tell the plant which direction to grow. If your stem is getting weak, or you want the plant to grow in a specific direction then the light should do its job. Other than this the light will not contribute significantly to the growth of the plant.
QUOTE(afrothunder @ Nov 22 2007, 05:21 AM) 
The LED lights you purchased are pretty much useless, for growing plants that is. For the plant to produce ATP during the light reactions it uses a "site" called P680, which uses 680nm light to be converted into chemical energy. 680nm light is red, and they actual wavelength that has the greatest absorbance is around 665, since "chlorophyll a" uses florescence to lengthen the wavelength so it can be absorbed. A typical "cool white" light will produce light in the blue to yellow region.
This light may be useful for controlling direction of growth, since there are pigments which absorb blue light to produce hormones and tell the plant which direction to grow. If your stem is getting weak, or you want the plant to grow in a specific direction then the light should do its job. Other than this the light will not contribute significantly to the growth of the plant.
for growing plants that is. For the plant to produce ATP during the light reactions it uses a "site" called P680, which uses 680nm light to be converted into chemical energy. 680nm light is red, and they actual wavelength that has the greatest absorbance is around 665, since "chlorophyll a" uses florescence to lengthen the wavelength so it can be absorbed. A typical "cool white" light will produce light in the blue to yellow region. This light may be useful for controlling direction of growth, since there are pigments which absorb blue light to produce hormones and tell the plant which direction to grow. If your stem is getting weak, or you want the plant to grow in a specific direction then the light should do its job. Other than this the light will not contribute significantly to the growth of the plant.
I am currently testing some led lights but they consist of approx 120 red led's and 40 blue. They seem to be doing the job but the proof will be in the end result. I also use 3 * 600w sodium bulbs.
QUOTE(digitalgalaxy @ Nov 24 2007, 09:02 AM)
QUOTE(afrothunder @ Nov 22 2007, 05:21 AM)
The LED lights you purchased are pretty much useless, for growing plants that is. For the plant to produce ATP during the light reactions it uses a "site" called P680, which uses 680nm light to be converted into chemical energy. 680nm light is red, and they actual wavelength that has the greatest absorbance is around 665, since "chlorophyll a" uses florescence to lengthen the wavelength so it can be absorbed. A typical "cool white" light will produce light in the blue to yellow region.
This light may be useful for controlling direction of growth, since there are pigments which absorb blue light to produce hormones and tell the plant which direction to grow. If your stem is getting weak, or you want the plant to grow in a specific direction then the light should do its job. Other than this the light will not contribute significantly to the growth of the plant.
for growing plants that is. For the plant to produce ATP during the light reactions it uses a "site" called P680, which uses 680nm light to be converted into chemical energy. 680nm light is red, and they actual wavelength that has the greatest absorbance is around 665, since "chlorophyll a" uses florescence to lengthen the wavelength so it can be absorbed. A typical "cool white" light will produce light in the blue to yellow region. This light may be useful for controlling direction of growth, since there are pigments which absorb blue light to produce hormones and tell the plant which direction to grow. If your stem is getting weak, or you want the plant to grow in a specific direction then the light should do its job. Other than this the light will not contribute significantly to the growth of the plant.
I am currently testing some led lights but they consist of approx 120 red led's and 40 blue. They seem to be doing the job but the proof will be in the end result. I also use 3 * 600w sodium bulbs.
If your using the sodium WITH the led's, how is it a conclusive test ?
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.