The Planted Tank Forum - View Single Post - Convert Lux meter to PAR meter?
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Old 10-10-2012, 10:22 PM   #144
Hoppy
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All that's left is to glue the sensor to the "handle", a 1 5/8" x 5" piece of acrylic, that seals the bottom of the sensor and lets me hold it in place under water without my arm or hand interfering with the measurement.

I think this is the ultimate PAR meter for the DIYer. Easy to make and cheap.
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