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Good Article...Enjoy Reading!

686 views 1 reply 2 participants last post by  Steve001 
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#2 ·
Using PAR measurements is a far more accurate way of quantifying light used for growing plants
PAR meters measure all photosynthetically active radiation without preference. [PUR] Photostynthetically Usable Radiation is far more accurate than PAR because you'll know within the PUR meters sensitivity which wavelengths are actually produced by a light source.
Further reading: http://www.advancedaquarist.com/2010/2006/8/review2
 
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