Stratosphere ZoanthidsHow to Care for Stratosphere Zoanthids: (written by Dave Burr) Stratosphere Zoanthids are one of the rarest and most sought after Zoanthids in the Reef Aquarium hobby. Placement: Mount the Stratosphere Zoanthids using IC gel glue, or putty, on an exposed rock lower in the aquarium where they will receive direct flow and light. Feeding: Although symbiotic algae called zooxanthellae hosted within them supply most of their nutritional requirements