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milocrab_gw

Where to take lux measurement?

milocrab
12 years ago

I'm sorry if this is a really stupid question; but where are you suppose to take the lux measurements? Do you measure on top of the plant or at soil level?

Comment (1)

  • zathras
    12 years ago

    There will tend to be hot spots from lights that aren't visually obvious, so you'll want to measure multiple locations to get an average.

    There is probably a standard method from http://www.cie.co.at/cie (International Commission on Illumination).

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