Seachem CoralCrete is a versatile underwater epoxy putty designed specifically for reef aquarium enthusiasts. This two-part adhesive can be used to securely attach coral and rockwork, providing stability in your aquatic environment. With its quick curing time of just 24 hours, whether submerged or emerged, this product ensures that your marine life remains safe and supported. CoralCrete's gray color blends seamlessly with natural reef formations, making it an ideal choice for enhancing the aesthetics of any saltwater aquarium setup.