Quote:
Originally Posted by shimmy
What is the difference between the Royal blue and the Actinic blue compact florescent bulbs?
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I believe the difference between the two bulbs is a slightly different spectrum. Standard actinic peaks at 430nm while I believe that the royal blue peaks at 460 nm. I think the royal blue tends to be more blue looking. I don't know how it affects coral growth and colour though.
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72 gal bowfromt mixed reef sps dominated, 25 gal mineral mud type sump/refugium Skimmerless
2x250 14000k phoenix hqi 2x96 pc actinic, 50x flow
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