Made from unpolluted natural riverbeds, Thoreau's sand has a very soft and distinctive color, which deepens in saturation and contrast when immersed in water. Its very homogeneous and refined grains make it suitable as a substrate for aquascapes, perfectly replicating the original landscape of rivers and streambeds and creating a unique natural ecological atmosphere. Thanks to its adaptability and plasticity, it is also ideal for matching with flora, fauna, rocks, and decorations to create distinctive landscapes. Smaller grains of 2-3mm Thoreau sand is suitable for creating a more delicate and softer landscape effect and can be used with smaller aquatic plants to create a dense, bushy aquascape.