Use Thrive’s Coral Glue Pen to attach your favorite SPS and colonial corals to Coral Plugs. Open a new tube of Thrive’s Coral Glue Pen for fresh glue each time you begin fragging. Stop throwing away money on big bottles of runny glue that expire quickly once you open them, and start fragging with fresh glue when you’re ready. Each tube contains enough supply for 15 or more coral fragments. Tool Tips: Use only sharp tools. For Stoney Corals, choose bone cutter tools with short cutting ends. Choose stainless steel tools that will not rust over time. Be sure to dry your tools after using them.