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

  1. #9
    Outsiders71's Avatar
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    Isn't the blue wavelength used for vegetative growth and the red wavelength for flowering?

    Also wouldn't the LED's work better if they were as close to the plants as possible?
    James 1:17

    "Every good and perfect gift is from above, coming down from the Father of the heavenly lights, who does not change like shifting shadows."

  2. #10
    endparenthesis's Avatar
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    Lumens are really a measure of brightness to the eye. Arrays of red and blue LEDs that are more than sufficient for plants will still appear very dim, so lumens aren't a very useful metric here.

  3. #11
    Av8tor1's Avatar
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    To expand on endparenthesis comment, you can have two 40w fluorescent bulbs, one 3000 lumens Daylight and one 1500 lumens Grolight... and the much dimmer 1500 could easily be the better bulb for plant growth... the human eye is most sensitive (which Lumens is based upon) to the greens and yellow wavelengths which the plant needs the less of... so in a way lumens is a measurement of light energy which the plant can not use efficiently, the brighter it is to you, the dimmer it is to the plant (assuming equal wattages and correct spectra)

    How’s that for a paradigm shift

    Av


    71... its not an either/or situation, look at the links

  4. #12
    rattler's Avatar
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    heres what i got from the guy who loaned me the light

    It is the Solar Oasis Ruby Pro (LGM3) V. 9 (red line)

    Question: spectrum?
    Answer: see graph


    Question: closer is better?

    Answer: Generally yes, but I have noticed smaller leaves and too much
    can
    burn certain plants. It is too new to say how close they should be for
    every plant. Full sun plants can tolerate it very close.

    Question: more blue?
    Answer: Yes, blue helps vegative growth (nepenthes/helis)

    Question: white LED?
    Answer: Yes, white LED should also work because it includes blue and
    red,
    just like white fluorescent light. White LED is the shotgun approach to
    so
    that you get less red and blue, but it is still there in a smaller
    amount.
    cervid serial killer
    Know guns, know peace, know safety. No guns, no peace, no safety
    I didn't get stimulated but he kept his promise on change, that's about all I got left!
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  5. #13
    Av8tor1's Avatar
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    their curves seem to be downplaying the blue absorption levels compared to every published curve Ive seen, the Chlorophyll a and b spikes should be considerably higher... it may need help there.. it will be interesting to see how it does for you




    Av

  6. #14
    Whats it to ya? Finch's Avatar
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    Looks good, cant wait to see an update! Thanks for sharing!

    Perhaps this will inspire people to do experiments of their own
    that makes no logic

  7. #15
    Stay chooned in for more! Clint's Avatar
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    Experiments are good, but not experiments with font size.

  8. #16
    Whats it to ya? Finch's Avatar
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    hahaha clint, thats not what I was talking about at all… rattler knows what im talking about



    Catches your eyes like a trainwreck, though, doesn't it?
    that makes no logic

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