If you are serious with your fragging or have a large aquascape to build, the Maxspect Coral Glue Gun is a great tool to have around. The replaceable adhesive cartridge contains 50 grams of extra-thick super glue that can be applied exactly at the desired location with the stainless steel applicators. If you just glue a single frag out of the water, a simple small tube of glue will usually work better, but if you need to glue large colonies of fragmented, aquascaping or an underwater fragments, the corrosion-resistant Maxspect Coral Glue Gun is the perfect solution.