Use to fill in cracks between rocks to prevent water from being lost over the waterfall. Improves water flow visually and black color hides foam in the shadows of the rocks. Fade resistant - uses carbon black for inherent color rather than black dye that fades. Minimal expanding foam - better density, better control, more consistent color, less waste and less trimming of excess foam. Hand foam cans have a patented trigger system which allows multiple uses and can be reused for up to two weeks. Trigger dispenses foam in any position - no expensive gun required. Fish safe, non-toxic formula.
Part Number: BWFN