[airinhere]

Is it possible that the photosynthetic variable you are describing might have a major influence in marine tanks? If most scientific studies are focused on mature colonies, but most aquarists have individual frags or immature colonies, could the data being presented be contrary to what aquarists are looking for.

Illustrative example:
Researcher notices that a colony produces more net photosynthesis at times of highest illumination. They also notice a substantial reduction of photosynthesis at these times in parts of the coral that are directly exposed to the source of illumination. Corals that are partially obscured from the illumination are noted to be compensating for this localized reduction.

In an aquarium, almost all the corals kept are part of this direct exposure group. Only in very mature tanks with substantial lighting systems could we see the reduction of photosynthetic activity being compensated for by other members of the same colony. Since most home aquarium corals are in this direct exposure group, perhaps a more detailed look at the mechanics and reactions of the "wild" colonies during the peak illumination should be made.

At what point does the photosynthesis become reduced in these constantly exposed sections of a colony?

What processes are occuring to reduce the photosynthesis?

Are there posssible methods of lighting that could reduce the severity of or eliminate the reduction of photosynthetic activity?