Put on the protective gloves. Dry off the rock you plan to use as the base of the new colony with the paper towels.
Lift up the main part of the colony. Locate the thinnest piece of connecting material between the bulk of the colony and the section you wish to separate for propagation and cut it with the razor blade.
Peel the separated section of the colony from the rock.
Squeeze the super glue onto the rock where the colony will be placed. Dry off the bottom of the zoanthid cutting with the paper towels. Glue the cutting to the rock, allowing the glue to set for at least 20 seconds before proceeding.
Rinse off any excretions produced by the zoanthids in the container of clean saltwater. Place the new colony back into the main tank with plenty of exposure to the light and water flow. The new colony should begin to flourish after a few hours.