Blue color is what is left when the other frequencies are filtered out as one goes deeper into the ocean. Thus logic tells us that if we supply full frequency lighting to our corals they will grow and be "happy". Full frequency is 6400K at the water surface at noon in the tropics. Remember please that corals can't "see" worth a hoot because they have no eyes
Ater saying that, guess who has actinic lights on both of his tanks.
