Anyone experience with LIGHTMETER?

Discussion in 'Reef Lighting' started by nanomania, Oct 2, 2011.

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  1. nanomania

    nanomania Vagabond Butterfly

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    nanomania, Oct 2, 2011
    nanomania, Oct 2, 2011
    #1

    2. Click Here!

  2. nanomania

    nanomania Vagabond Butterfly

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    anyone?
     
    nanomania, Oct 3, 2011
    nanomania, Oct 3, 2011
    #2
  3. Drew

    Drew Plankton

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    Par

    that meter says it measures lux. for coral i believe you should be measuring PAR.
     
    Drew, Oct 3, 2011
    Drew, Oct 3, 2011
    #3
  4. Bustopher

    Bustopher Skunk Shrimp

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    Bustopher, Oct 3, 2011
    Bustopher, Oct 3, 2011
    #4
  5. m2434

    m2434 Giant Squid

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    Yes, a lux meter is not only useless for aquariums, it is misleading. Lux weights light according to the photopic luminosity function. This is a curve used to weight light to the parts of the visual spectrum that our eyes are most sensitive to. Yellow-green being given the highest weight. However for corals yellow-green is likely not useful, and more blue is, but blue is hardly given any weight. You can still use lux to compare bulbs of the same spectral output (if known which is almost certainly isn't). However, if you want to track your bulbs life for example, it probably won't be useful as your bulbs may shift to lower Kelvin ratings as they get older.

    see Luminosity function - Wikipedia, the free encyclopedia
     
    m2434, Oct 4, 2011
    m2434, Oct 4, 2011
    #5
  6. nanomania

    nanomania Vagabond Butterfly

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    then what should i buy? im going with LED floodlights blue:white 2:1 ratio.
     
    nanomania, Oct 4, 2011
    nanomania, Oct 4, 2011
    #6

    7. Click Here!

  7. reefmonkey

    reefmonkey Giant Squid

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    See post #4
     
    reefmonkey, Oct 4, 2011
    reefmonkey, Oct 4, 2011
    #7
  8. nanomania

    nanomania Vagabond Butterfly

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    i know but i guess u cant measure them inside water. not water proof i guess.
     
    nanomania, Oct 4, 2011
    nanomania, Oct 4, 2011
    #8
  9. mikejrice

    mikejrice 3reef Affiliate

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    The Apogee MQ-200 can measure in water.
     
    mikejrice, Oct 4, 2011
    mikejrice, Oct 4, 2011
    #9
  10. nanomania

    nanomania Vagabond Butterfly

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    model MQ 200 is costing 383$ correct?
     
    nanomania, Oct 4, 2011
    nanomania, Oct 4, 2011
    #10
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