The Planted Tank Forum - View Single Post - DIY PAR meter, Yeah you heard me
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Old 11-08-2010, 04:22 AM   #7
No more Bow ties
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I found some neat µmol m-2 s-1 conversions and some standards like full sun is 2000 PAR on Apogee's website.

Posting for posterity.

1 µmol = 6.02 × 10^17 photons
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