Seiryu Stone is a famous is highly prized aquascaping rock known for its deep gray-blue color, jagged mountain-like ridges, and striking white calcite veins. It is widely used to build realistic underwater cliffs, valleys, and Iwagumi-style layouts.

Key Features and Appearance:

• Colour: Deep gray, dark blue, or slate-gray with fine white lines.
• Texture: Wrinkled, fissured, and rugged, mimicking large mountain ranges.
• Style: Perfect for Iwagumi layouts, nature aquariums, and terrariums.

Impact on Water Chemistry:

• Limestone-based: Composed largely of calcium carbonate.
• Hardens water: Slowly leaches minerals into the tank, raising general hardness (GH), carbonate hardness (KH), and pH over time (often stabilizing around 7.6 to 7.9).
• Caution: Not ideal for soft-water or blackwater fish species that prefer a low pH.