GREAT STUFF Pond and Stone is the easy way to create beautiful aquascapes and hardscapes. By expanding to fill gaps and cracks, our foam filler helps direct the flow of water in waterfall, pond and streambed construction to the exterior of the water feature, instead of between or behind rocks.
- Black foam designed for use in water features, blending in with rocks and shadows
- Water resistant sealant to help direct the flow of water in waterfall, pond, & streambed construction
- For use in landscaping as a foam filler, sealer and adhesive
- Application in damp or dry conditions; cures in 8 hours
- Safe for fish