The Planted Tank Forum - View Single Post - DIY PAR meter, Yeah you heard me
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post #7 of (permalink) Old 11-08-2010, 05:22 AM Thread Starter
mistergreen
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Join Date: Dec 2006
Location: Cincinnati
Posts: 15,776
I found some neat µmol m-2 s-1 conversions and some standards like full sun is 2000 PAR on Apogee's website.

http://www.apogeeinstruments.com/faq_solar.htm#Q3

Posting for posterity.

1 µmol = 6.02 × 10^17 photons

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