anyone knows if LED grow lights can do a good job or not?

 


Hello, everyone,

Parus Co., Ltd, came from South Korea and now is the best manufacturer
of LED
grow lighting in Shanghai, China. We have over 5 years of
experience in this
field and had our technology patented in Korea.
Parus grow lighting is totally
different from what you can buy from
elsewhere in the world. If use properly, an
increased growth of the
plant by 50% or above can be expected.

Special Recommendation:
PGL-PFL series Grow Line Light
Applications:
Commercial greenhouses, Horticulture, Office, Home
Features:
Adequate PAR： Unlike those amateurish LED grow lighting in the
market,
PGL-PFL series really emit adequate PAR that the plant need for
proper
photosynthesis.
Size(length): 600mm , 1200mm
LED Type: 2W Hi-Power LED
Power Consumption:
PGL-PFL 600 1-Line 40W/2-Line 80W/ 3-Line 120W / 4-Line 160W
PGL-PFL 12001-Line 80W/2-Line 160W/3-Line 240W/4-Line 320W
Voltage: AC100~245V, 50/60Hz
Wavelength : 660nm-670nm,430nm-440nm, white(6500K),
Color Ratio: R:B:W=8:1:1
Life Time: Over 50,000 Hr
Lamp Angle: 120 °
Recommended Coverage: PGL-PFL600 2-line for 3 sq m at a distance of 1m

Temperature: Real heat sink technology to be used to realize real
warm-to-touch
temperature. Fans, like that in UFOs, are thrown out by
PARUS.
MOQ:   1 set
Warranty:
LED grow light  3 years
Adaptor        2 years


Reference of Sales: http://tinyurl.com/yfsxqq4

We also have other items, if you’d like, I will be pleased to send the
latest
catalogue to you.

Looking forward to hearing from you soon.


Best Regards

Cindy Yuan


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--
Cindy0205

 

Probably.
There seems to be a lot of activity on this subject with various results,
depending on leds/colours used.
I wouldn't get into them till the technology shows what's needed.
You would need the right mix.
But growing plants 24/7 is cruel to plants as they wouldn't be able to
sleep.
I can see it now. The "Society for prevention of cruelty to plants"

 

Further info tells me cost would be prohibitive.
What I found....

"Ok, I have to add this little snippet. I just joined today and am seeing
this and the large amount of MIS_INFORMATION that is being spread.

LED's work, they also work good. I know, this because the college I went to,
got a grant from the USDA to perform tests with LED's along with 4 other
schools. University of Iowa, Southern Illinois University, Harvard, and 1
other I cannot remember at the moment.

However with that being said, I would like to re-iterate, LED's work and
work good. However, the LED's that you would need to use to get rid of a 400
watt HPS bulb is about $900.

Here is what we came up with in our study, it was a collaboration between
all schools who received the grant. The study was then published by Harvard.

We report on a high-power solid-state lighting facility (fixture) for
cultivation of greenhouse vegetables and on the results of the study of
control of photosynthetic activity and growth morphology of radish and
lettuce imposed by variation of the spectral composition of illumination.
Experimental lighting modules (useful area of 0.22 m2) were designed based
on 4 types of high-power light-emitting diodes (LEDs) with emission peaked
in red at the wavelengths of 660 nm and 640 nm (predominantly absorbed by
chlorophyll a and be for photosynthesis, respectively), in blue at 455 nm
(phototropic function), and in far-red at 735 nm (important for photo
morphology). Morphological characteristics, chlorophyll and phytohormone
concentrations in radish and lettuce grown in phytotron chambers under
lighting with different spectral composition of the LED-based illuminator
and under illumination by high pressure sodium lamps with an equivalent
photosynthetic photon flux density were compared. A well-balanced
solid-state lighting was found to enhance production of green mass and to
ensure healthy morphogenesis of plants compared to those grown using
conventional lighting. We observed that the plant morphology and
concentrations of morphologically active phytohormones is strongly affected
by the spectral composition of light in the red region. Commercial
application of the LED-based illumination for large-scale plant cultivation
is discussed. This technology is favorable from the point of view of energy
consumption, controllable growth, and food safety but is hindered by high
cost of the LEDs. Large scale manufacturing of high-power red AlInGaP-based
LEDs emitting at 650 nm and a further decrease of the photon price for the
LEDs emitting in the vicinity of the absorption peak of chlorophylls have to
be achieved to promote horticulture applications. "

 


I think so
www.ledlightmaker.com for LED GROW LIGTHS