Contrary to popular belief, a vast majority of corals are not autotrophic, requiring only light to survive. Autotrophs produce their own food from inorganic material they extract from their surrounding environment, usually using sunlight to synthesize it with the aid of zooxanthellae algae. Giving your corals some extra food can really perk them up and increase their reproduction rate.
More: Exactly What Do Corals Eat?? Corals, for the most part, are carnivorous, feeding mostly on small animals (zooplankton) suspended in the water column of the ocean ...
More: When Do Corals Eat?? You might be surprised... While you are sleeping, guess what your corals are doing?
Photo © Rick Herring