Black Mountain SeiryuStone is a wonderful stone commonly used for aquascaping. Similar to its popular relative, Seiryu Stone, Black Mountain Seiryu earns its name due to its charcoal grey, almost black color with blueish undertones. Black Mountain Seiryu Stone also offers similar texture and characteristics such as grooves, interesting shapes, and more making it a good pair when using brightly colored aquarium plants. Application is very versatile and like normal Seiryu, Black Mountain Seiryu works wonderfully alone or paired with aquarium driftwood in planted aquarium tanks.