JF Lethal Leptoseris CoralHow to Care for JF Lethal Leptoseris Coral: (written by Dave Burr) Orange is an uncommon color for corals, thus the JF Lethal Leptoseris Coral will stand out in any reef aquarium. It is easy to keep and will encrust over the rocks as it grows. Placement: Mount the JF Lethal Leptoseris Coral using IC gel glue, or putty, on an exposed rock in the lower two thirds of the aquarium where they will receive moderate currents and low to moderate lighting.