Sol white has 2 white led and one blue. Sol blue has white led , blue led and royal blue. I run the sol blue fixtures you will need three if you want to run them across the tank, two fixtures if you want to run the length of the tank
Don't count the SOL white out of your shopping. You have potential for higher PAR out of a SOL white than a blue, and with the controller you can tune it to look just as good while you're home.
Michael Rice
Marine Engineers Aquarium Blog
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