The Planted Tank Forum - View Single Post - Is my lighting low/med/high?
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Old 01-30-2013, 05:15 PM   #6
somewhatshocked
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Please note that the number of watts doesn't determine your light level.

It's based on PAR - typically more the lesser the distance between substrate and fixture.

Here's a thread that should help you greatly: http://www.plantedtank.net/forums/sh...d.php?t=184368
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