Rbta lighting as food source: is actinic necessary?

[Hal]

I'm curious if anyone knows what the proper spectrum of lighting is used by RBTA's? Maybe more specifically, do RBTA's use actinic lighting for their zooanthellae or is actinic just for aesthetics? I'm trying to figure out how much actinic from my led's I should be using. I don't like blue aquariums so I have my blue channel set at about 10%.

 

[syrinx]

Actinic lighting is replicating the wavelength of sunlight that penetrates to a depth further than other spectrums. If the animal is found in shallower waters, then it is not needed. I think in most cases natural sunlight spectrum is sufficient- say 5500 to 6500k. After that it is more about personal taste. More blue and less white may effect colors though, thats why sps growers often use higher K and actinics-even though corals grow faster under 55-6500k.