Corals will get a lot of their energy from sunlight but they still need protein and other nutrients to grow. Coral Foods can be either target fed directly to each individual coral or broadcast fed throughout the aquarium. Depending on the type of coral you are keeping, you may find that target feeding works better than broadcast feeding, or with come corals like SPS and other small mouthed animals broadcast feeding is super effective. Other additives like Amino Acids can be added to your aquarium to help increase the availability of proteins and assist in breaking down solids into simple carbohydrates and proteins, allowing your corals to focus more on growth and coloration than digestion.