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 The problem you will have with neutral white and even the yellower cool white bins is spot lighting effect (especially with optics)....it's just too hard to blend a yellow light.  What they need is a true white with a broader spectrum.  Have you built any LED fixtures yet Steve?
 No one is using 3000k or 6500k T5s and trying to blend them with blue......
 
 IMO the Cree whites have a ways to go in development for aquarium use.  I really like the direction Orphek is going.  LEDs designed for aquarium use.....not LED designed for home and industrial use and adopted by the aquarium industry.
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