Question, re: SPS Polyp Extension

[Reefer Rob]

Is there a reason why you want polyp extension during the day? The coral is just trying to do what though evolution has worked best for it; feed at night when there is the most abundant food, and the least predators. From what I understand, any PE during the day normally has to do with optimizing the available light. Forcing PE during the day may be detrimental to the coral.