Atomic Sympodium CoralHow to Care for Atomic Sympodium Coral written by Dave Burr Atomic Sympodium will grow and encrust over the surrounding rocks. Placement: Mount the Atomic Sympodium using IC gel glue, or putty, on an exposed rock lower in the aquarium where they will receive direct flow and light. If you do not want them growing on your your main rock structure, try creating a Zoanthid island by mounting several types of Zoanthids and Palythoa to one larger rock and