The Gorilla Glue Original, scientifically known as Polyurethane Glue, provides superior bond strength and flexibility in waterproof and non-toxic applications. This product is commonly utilized in aquatic life support systems, marine aquaria, and reef aquariums for marine animals. The Gorilla Glue Original is non-toxic and does not contain any harmful additives. It cures at room temperature by exposure to air and moisture. Gorilla Glue Original bonds to most surfaces including glass, plastic, metal, and ceramic. Safe for all aquatic life, including fish, invertebrates, and coral. Gorilla Glue Original is non-toxic and will not harm plants, fish, or other aquatic organisms. It bonds well to both natural and artificial substrates. Use Gorilla Glue Original with caution and always follow proper care instructions. If questions remain regarding compatibility or safety, consult a local reef artisan or professional reef specialist.