Hydra Aquatics Black Mountain Seiryu Stone 

- Beautiful, black variation of Seiryu stone

- Darker gray color with blueish tone

- Craggy texture with lots of details

- May raise pH, GH, or KH slightly

- Cleaned and sterilized

Hydra Aquatics’ Black Mountain Seiryu Stone is a beautiful, black variation of Seiryu stone. This stone has a darker gray color with blueish tone compared to regular Seiryu stone’s light gray color. The stone has a craggy texture with lots of details. Black Mountain Seiryu Stone may raise pH, GH, or KH slightly.

Recommendation: Rinse stones prior to use.