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Thread: my own LED experiment..........

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    rattler's Avatar
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    my own LED experiment..........

    a member here was kind enough to allow me the temporary use of a LED setup. not going to name the individual because i dont want ppl bugging him for the same thing but if he wishes to identify himself thats his choice. however i am VERY greatful for the opportunity

    for the test im using some raff x ?? seedlings and a H. minor.

    raff seedlings(only used 3 of these pots)


    H. minor in poor shape due to neglect


    here is the setup minus some plastic tenting i used to up humidity. i think im going to have to place the seedlings on something to get them closer to the lights but other than that should be good to go. this setup is far enough away from any of my other lights that they shouldnt impact the test.
    cervid serial killer
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    Av8tor1's Avatar
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    just curious, can you post a pic of the spectrum... (if you have a 35mm or digi SLR)

    how to build a CD spectrometer

    TIA,
    Av

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    what is the color ? What amount of lumens ?
    I asm conmsidering bulk ordering from a wholesale semiconducter website thern solder a hundered 800 white leds with a few resisters and a protection circuiut.....

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    -=Joel=-'s Avatar
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    Quote Originally Posted by jm82792 View Post
    What amount of lumens ?
    Leds are not measured in Lumens

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    pingman's Avatar
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    Also white LED's are not used in growing plants. Its mainly red with some blue led's that are used. White light is mostly wasted by plants.
    Peter.
    Please check my website for photos:
    http://www.flickr.com/photos/minicatt/sets

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    they sell them in lumen output;
    your right maybe I could mix red and blue.....

  7. #7
    Hello, I must be going... Not a Number's Avatar
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    Quote Originally Posted by -=Joel=- View Post
    Leds are not measured in Lumens
    LED output is measured in mcd (millicandela) which can be converted to lumens provided you know the beam angle:

    http://led.linear1.org/lumen.wiz

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    Av8tor1's Avatar
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    ... and the wrong "far red" can even stop plant growth... many lights can grow plants, but for optimum growth and color a delicate balance is required, it's a goldilocks thang



    suggested reading

    some great spectrum examples

    Av

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