Gold Label Black Pond & Aquarium Sealant is powerful underwater sealer that can be used to bond all surfaces in all types of ponds and water features. No need to drain the pond -- just clean the surface to be sealed! Allow 24 hours to cure. Safe for fish when cured.
Solvent-free and isocyanate-free
Bonds to butyl rubber, vinyl, glass, ceramic, stone, concrete, wood and more