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#15
02-10-2012, 06:23 AM
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There is a thorough article here:
http://www.americanaquariumproducts...._Lighting.html that goes into detail on the various aspects of light. It claims, and I agree, that PAR runs from 400nm to 700nm, and of particular importance is the 400-550 range, and in the actinic range, the highest PAR is found in the 465-485nm range. Dan
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Link to my Tank Upgrade Thread Dan Leus, Marine Biologist 20+ Years Marine Aquarium Experience Save the Reef, Buy a Frag! 
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