Seiryu Rock 1kg

Seiryu rock is a famous, highly prized aquascaping stone featuring a bluish-gray color, craggy textures, and striking white calcite veins. Originating traditionally from Japan, it is widely used to build dramatic mountains, cliffs, and valleys, especially in minimalist Iwagumi-style freshwater aquariums.

Appearance and Characteristics

• Color: Bluish-gray, dark gray, or charcoal with contrasting white calcite lines and veining.
• Texture: Rugged, angular, jagged, and weathered with deep crevices and crinkles.
• Material: A limestone-based rock that is dense and heavy.

Impact on Water Chemistry

• Alkalinity: Because it is calcareous (limestone), Seiryu rock leaches calcium carbonate into water.
• Hardness & pH: It can gradually raise general hardness (GH), carbonate hardness (KH), and pH levels, leveling off once the water becomes moderately alkaline (around pH 7.6 to 7.9).
• Livestock Impact: Excellent for hard-water fish and Neocaridina shrimp, but potentially challenging for soft-water or blackwater species.

Aquascaping Uses

• Iwagumi Style: Perfect for arranging a main feature stone (Oyaishi) alongside supporting stones to mimic mountain ranges.
• Plant Anchoring: The deep crevices and rough surface make it easy to attach mosses and epiphytic plants like Anubias or Blyxa.
• Care Tip: Rinse the rocks thoroughly under tap water before use to remove residual quarry dust or shipping debris.