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  • 2 Post By chemist
  • 1 Post By raybark

Question direction of led flood light

This is a discussion on Question direction of led flood light within the Semi Hydro / Lights / Greenhouses / Accessories forums, part of the Orchid Culture category; I have a Vanda under 2 t12 cool whites and 2 10 watt (900lumen each ...

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  1. #1
    MICKEY's Avatar
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    Question Question direction of led flood light

    I have a Vanda under 2 t12 cool whites and 2 10 watt (900lumen each ) flood lights red and blue am I better off having both floods on the same side of the plant or one on the front and one on the back , the t 12s are above the plant
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  2. #2
    ksriramkumar is offline Senior Member
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    don't grow them indoors. sure some one will chime

  3. #3
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    Mickey, when i was summering my vanda outside sriram gave me advice that both sides of vanda have received light. Position of mine was such that i had to turn it so both sides receive equal amount of light. So best position would be to put vanda under all your lights.
    I just googled difference between T12 and T5....
    Obviously its more expensive but give more lumen...
    Here is my vanda under light 4 4" T5. Before spike grew longer it was under lights now its little bit more on the side. I dont use any other light to bloom it.
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    That's actually an interesting question, but as chlorophylls absorb significantly in both red-, and blue wavelength, I think it would be better to illuminate the plants from above, using both, so that all plant tissues receive both.

  5. #5
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    both bulbs have red and blue ( more red)

  6. #6
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    In that case, I think the need for being directly above the plant is reduced.

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