The solaris system is what the OP is referring to and it is well reviewed and used succesfully in reef applications. The price tag is staggering but they claim to make it up in long life and efficiency.

with this system a bank of LED lights are used as a whole tank lighting system that is full spectrum and programmable to represent many natural lighting conditions and daily changes.

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Gold Coast Aquarium Society South Florida
www.goldcoastaquarium.org