JBL Pro Haru Rapid is a gelatinous adhesive, which hardens within a few seconds. It is ideally suited for bonding moss and epiphytes to create underwater landscapes. It is also suitable for the easy bonding of coral fragments and smaller decorative objects. JBL Pro Haru Rapid is applied outside the water and completely hardens under water. No damages is done to living tissue. Always apply the adhesive outside the water. Ideally this means in a dry underwater landscape, after the water level has been lowered or after the root or stone has been removed form the aquarium.Jbl Pro Haru Rapid Instant Adhesive+ fixes moss, plants and coral pieces+ hardens instantly+ colour: transparent