Direct water over and around waterfall rocks for a fuller more beautiful effect to your waterfall or stream with Black Waterfall Foam. The expansion of the black waterfall foam make it great for filling voids and cracks between rocks. Since it sticks to almost anything, use it to secure stone edging and contain gravel on bog areas. The Black Waterfall Foam is formulated for the water garden industry to withstand fast flowing water and the debris it carries, UV rays of the sun and will not shrink nor harden.
Cannot ship via air.