Make the tank look pretty and how you want it to look and make sure it isn't too bright. That's all you have to do. Most growth comes from blue but if you are successful more growth won't be what you want in 2 years when you have to play tetris with coral frags. Setting the lights where you want them now will let your corals adapt and grow to fit that lighting, and make them healthy in the long run.So I think i have a decent hold on spectrum and par etc... it is my understanding that best coral growth comes from white light and best coloration (fluorescing of the coral) comes from blue light.
Where i get confused is if i use white (6500k) light to grow the corals vs blue light (14000k) to grow the corals. Will a coral that is grown under 6500k light still have the same fluorescence and color if placed back under 14000k light vs a coral that is grown entirely under a 14000k light.