Crystal Clear Reef Glue Gel Tube For best results apply a small amount of Reef Glue Gel to coral frag, only enough to cover exposed skeleton, Avoid covering live coral tissue. Press to mounting fixture and hold until glue begins to cure. It is designed to offer the perfect blend of functionality and ease of usage. So, what are you waiting for? Bring home this great quality product right away! Product Features: Advanced aquaculture reef glue gel is designed for soft coral and stony coral fragging. It can be applied under water.