Alien Maze Brain CoralHow to Care for Alien Maze Brain Coral: (written by Dave Burr) Alien Maze Brain is easy to keep and grows well in most reef aquariums. They glow beautifully under actinic lighting. They do have sweeper tentacles that can extend 2" 4" at night and sting nearby corals. Placement: Mount the Alien Maze Brain using IC gel glue, or putty, on an exposed rock or ledge in the lower two thirds of the aquarium where they will receive moderate currents and low to