Seachem Flourish EpoxyTM is a dual-component epoxy putty designed for hardscaping in planted aquariums, allowing you to firmly anchor materials like rocks and driftwood for enhanced stability. It sets within 5 minutes of mixing and completely hardens, whether underwater or above water, in 24 hours. This product is perfect for securing rock formations that might otherwise collapse, risking damage to plants or the aquarium. When used according to instructions, Flourish EpoxyTM poses no harm to aquarium residents. Find it at MorphMarket for all your aquascaping needs.