Here is my 75 gallon. I built a DIY array using a 72 led kit from Aquastyle Online. It comprises 33 Royal Blue, 3 UV on on channel and then 18 10K cool white and 18 6500K on the second channel. 60 degree optics.
The LEDs are fully dimmable by my Arduino based controller.
My next array will feature more channels with a broader array of led colour to give more controllability over the spectrum.
In the photo I have the spot light effect because I had just fed some Cyclopeeze. Once it clears the spot light effect disappears completely.
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View my Aquarium & Reef Controller build here:
The Ultimate DIY Aquarium Controller of the 21st Century!!!
LED's, PH, Salinity, Clock, LCD, ATO, Auto Water Changer, Variable Speed Cooling Fan Control and lots, lots more......