I found these two statements in article 4 to be pretty interesting
"The capture rate of the small polyped coral was 36 times greater than the large-polyped coral!"
"However, for the first time it was shown that feeding results in calcification rates 50-75% higher than in control corals (not fed). It was also found that feeding does not affect the light-enhancement process of photosynthesis on calcification. To make these results completely understandable, if corals can feed on zooplankton, they will calcify 50-75% faster irrespective of light levels provided."