Code: AQ14080HoldFast Epoxy offers superior bonding strength in saltwater and freshwater aquariums. It allows for the construction of steps, caves, cliffs and walls in both aquariums and vivariums for animals to enjoy. Directions for use:- Clean and rough surfaces to be bonded. Cut or break off desired amount of HoldFast Knead the mass with your fingers until it turns white. Apply to bonding surface, being careful to fill any cracks and crevices. Smooth or sculpt any excess HoldFast to blend with surfaces. It dries within 30 minutes and can be sanded, filled or drilled in less than an hour. Warning: Wash hands with soap and water after use. Contains epoxy resins and amine which may irritat sensitive skin. In case of eye contact, flash eyes with water and contact physican. may be harmful if swallowed. Keep out of reach of children.