The Planted Tank Forum - View Single Post - DIY PAR meter, Yeah you heard me
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Old 11-08-2010, 04:05 PM   #12
No more Bow ties
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Is there a gel that blocks InfraRed?

Well, hopefully, calibrating the output based on Hoppy's chart might be 'goodnuf'.

I went ahead and contacted Hamamatsu on how to get their photodiode.
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