?Notice?The color of the stone is grey, when added to the water, it will turn deeper and darker.Each stone may have slight variations in color. If you have any questions, please don't hesitate to contact our customer service team. We offer 24-hour service. ?Recommended Usage? The size 7.48'* 5.51''*7.87 inches is perfect for micro-landscapes in fish tanks, allowing you to plant moss, ferns, and other types of aquatic vegetation. ?Designed Exclusively for Aquascaping? The large Resin seiryu stone model features a distinct mountain stone style with well-defined edges and crevices that facilitate the growth of plant roots, making it convenient for planting aquatic vegetation. The smaller Resin Resin seiryu stone is more suitable for desktop micro-landscapes and can also be used in combination with the larger size. ?100% Safe and Non-toxic?The resin seiryu stone landscaping model is absolutely free from any chemical element release, posing no harm to aquatic plants, fish, or shrimp. In contrast to natural seiryu stone , which may release trace amounts of minerals like Ca and increase water TDS, causing difficulties in growing certain high-demand aquatic plants, FZONE Resin does not release anything, allowing you to enjoy the beauty of seiryu stone without any concerns about TDS. ?Simple yet Perfect? FZONE Resin seiryu stone landscape features an incredibly realistic simulation of natural stone textures and colors. The highly authentic mountain-shaped design saves you the trouble of selecting and arranging stones for a good landscape. The Resin seiryu ston modeleffortlessly transforms your aquarium into a simple and perfect scene.