The Planted Tank Forum - View Single Post - Convert Lux meter to PAR meter?
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post #40 of (permalink) Old 06-21-2012, 03:14 AM Thread Starter
Planted Tank Guru
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Join Date: Dec 2005
Location: Sacramento, CA
Posts: 19,673

The photo diode, beside a penny. Just barely big enough for me to solder the lead wires to it. This is the same one Mistergreen used in his pioneering PAR meter build, DIY PAR meter, Yeah you heard me

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