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Old 03-07-2010, 01:40 PM   #11
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Originally Posted by cmor1701d View Post
I'm waitin for Larry to chime in with an article from Sanjay proving the worth of actinics. I the meantime...

"Corals flourish between 400nm-700nm (not macro algae), so providing lighting in this range would be your goal . . .

keep in mind that photosynthetic efficiency peaks at around 430 nanometers which is very close to the major spectral output of a standard “actinic” bulb."

good info. I thought they had some effect.

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