Worldwide Imports AWW81351 Natures Rocks Ebony Sunrise, 50-Pound Worldwide Imports Natures Rocks Ebony Sunrise Natural Quartize plus Sandstone, Will not alter the chemistry of your aquarium water Used for Freshwater Aquariums, Salt water Aquariums,Ponds,Terrariums,Gardens,Landscape Design and Architectural Surfaces Worldwide Imports Natures Rocks Ebony Sunrise Natural Quartize plus Sandstone, Will not alter the chemistry of your aquarium water Used for Freshwater Aquariums, Salt water Aquariums, Ponds, Terrariums, Gardens, Landscape Design and Architectural Surfaces