Black Waterfall Foam, 20 oz
(You save $15.25)
Use this black foam to fill in cracks between rocks to prevent water from being "lost" over the waterfall. Improves water flow visually. Black color hides foam in the shadows of the rocks. Fish safe, non toxic formula. Ideal for use with water features. Minimal expanding foam. Fills in cracks with less trimming of excess foam versus the triple expanding foam which over fills cracks and needs extensive trimming when done.