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post #3 of (permalink) Old 01-03-2013, 05:32 PM
Build My LED
Algae Grower
Join Date: Nov 2012
Location: Austin, Texas
Posts: 68
Veryzer. Glad you think this is helpful :-) We are currently working on the under-water measurements, but the air measurements allow us to predict average PPFD (PAR) measurements for the specific tank size. Beam angles will narrow in the water, but the total amount of the light in the tank will not be impacted beyond the Fresnel reflections off the top of the water.
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