Giant Pacific Octo Grip Coral Glue has a low viscosity, which makes it easy to apply and control. The glue is also non-toxic and safe for use in aquariums. Features: Low viscosity for easy application and control Non-toxic and safe for use in aquariums Ideal for joining rocks and wood Bonds quickly and forms a strong, durable joint Long-lasting and resists water damage Ultra thin ethyl cyanoacrylate glue Benefits: Create beautiful and natural-looking aquascapes Secure rocks and wood in place Prevent rocks and wood from moving or shifting Create a strong and durable foundation for your aquarium Enjoy your aquarium for years to come How to use: Hold the surfaces of the rock or wood together. Pack powdered rock or take a piece of soft sponge and push it between the surfaces you wish to glue together. Liberally apply OCTOSCAPE allowing the glue to fully soak through the powder or sponge. Hold the rocks or wood in place until the glue dries. It will create smoke and set hard. This normally takes 30 seconds to a minute. Repeat and reinforce join as required. Warnings: Bonds skin and eyes almost instantly. Do not inhale or swallow. Keep out of reach of children. Wear protective gloves and eye protection. Use in a very well ventilated area, use respiratory protection if there is insufficient ventilation as fumes will cause irritation.