Seachem Flourish Epoxy™ is two-part epoxy putty that can be used during hardscaping to secure materials such as rock and driftwood for more stable foundations in planted aquaria. It has a working time of 5 minutes and fully cures submerged or emerged within 24 hours. Flourish Epoxy™ is ideal for working with stacks of rocks, where collapse could cause damage to plants or the aquarium itself. It is completely safe for aquarium inhabitants.