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Thread: LED lights.....ran across an interesting experiment

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    rattler's Avatar
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    LED lights.....ran across an interesting experiment

    cervid serial killer
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    Finally some info on growing plants with LED's. Although disappointing that LED's did not perform as well as FL's, still noteworthy as an alternative source of lighting.
    I ended up buying one of those mixed bulb led's. I will try it on some plants as well.
    Peter.
    Please check my website for photos:
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    rattler's Avatar
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    dont think the above are perfect experiments.............would like to see what happens with the LEDs closer.....but thought it was interesting info so i posted it
    cervid serial killer
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    the LEDs are WAY too far from the plants.
    they should be right on top of the seedlings.
    the floros are also to far away.
    not a very scientific test, though interesting.
    SK-8 OR DIE

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    if yah read though thats what the manufacturer recommended for the LED's...........i to want to see what happens with the LED's closer...........terribly scientific? no.........end all proof LED's suck? no............only actual test ive come across thats half way controled? yes.........
    cervid serial killer
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    Quote Originally Posted by zero View Post
    the LEDs are WAY too far from the plants.
    they should be right on top of the seedlings.
    the floros are also to far away.
    not a very scientific test, though interesting.
    The test is still representative of the differences of LED vs Fluorescents being that both the fixtures were at distance from the plants which made them functional.
    I think the main reason the manufacture recommends the distance they have with the LED light bar is due to it's design, it has to be at the 18 to 20 inch level for functional distribution. Moving it closer might increase the intensity directly under each cluster of LEDs, but then you would have a mix of hot spots and dark areas between the light clusters on the bar.
    I was quite curious of these myself, I'm a LED fan but even with the recent advancements with high intensity LED's I was really skeptical of their capabilities with growing.
    Maybe some day....but idunno, the math involved with lighting can be twisted and bend but the results will always be the same, you only get so much light per watt. Proper reflection is about all you can control to maximize a watt of light.

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    -=Joel=-'s Avatar
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    Out of interest is there anywhere in his article where it states the specifaction of the LEDs ?

    To grow plants under LEDs you require alot more than just a bunch of random LEDs lol. I have just started off an experiment of my own after alot of research. On paper they should work but I have yet to see there effectiveness.

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    Just read part 2, very interesting. My one comment is it does not seem fair to compare a 4 tube fl fixture against the led's. Maybe only a 2 tube fixture would be a better test?

    Another thought would be to use the fl and led in combination and to see those effects!
    Peter.
    Please check my website for photos:
    http://www.flickr.com/photos/minicatt/sets

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