The Planted Tank Forum - View Single Post - Finnex PAR - Am I reading it right?
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Old 02-12-2013, 08:59 PM   #10
Ach1Ll3sH33L
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keep in mind those par readings are taken in open tanks, with no water. So they dont account for water surface reflection etc. you will have less par than what is shown in the chart, so you may find you dont need to reduce the lighting
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