The Planted Tank Forum - View Single Post - Finnex PAR - Am I reading it right?
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Old 01-31-2013, 12:38 AM   #8
flipanda
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Quote:
Originally Posted by nvladik View Post
It's high 50... the vertical marks on the chart are height, specifically form the LED's themselves to the substrate.
if the vertical marks is the distance, what are the horizontal marks for?
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