It would be nice to know much more about your system. How big is it, what do you have for filtration/nutrient reduction, water flow, tank inhabitants (fish and corals), what are your parameters (Alkalinity, Calcium, Magnesium, Ammonia, Nitrites, Nitrates, Phosphates, etc..). There are so many parameters and variables that come in to play. Lighting is just one of many.
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