[Coral-List] Photosynthetically Active Radiation

Jade Maggs jmaggs at seaworld.org.za
Tue Jan 24 04:57:56 EST 2006

Please can someone explain what P.A.R. is. I gather it is a percentage of lux which is photosynthetically active. For two bulbs with the same lumen output, can P.A.R. differ.

Jade Maggs
uShaka Marine World
083 515 1079

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