I dunno. White light is every colour, so what's the difference? One just gives you controllability of the actually amount of each light. About the amount of light, how many people start their radions at 40% of full so they don't bleach the corals? Seems to me, 60% of the leds aren't needed to match the halides they are replacing.
You reef guys crack me up. A $20k tank in the living room isn't overkill... but a light fixture with more than two colours is..
