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Unread 07/20/2012, 06:13 PM   #11
bnumair
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Join Date: May 2009
Location: Tulsa, Ok, USA
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that rule does not apply to LED's. if what Buzz1329 said was true then a single 120w Led unit will not be enough for a 120 gal. LEDs are mostly directional with not much wide angle light structure. also every LED fixture has its own par reading and work/act differently.
with LED's mostly coverage is the big issue than wattage.


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