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Blue Mountain Seiryu Stone is one of the most iconic aquascaping rocks, admired for its rugged form, sharp ridges, and striking blue-gray tones. Formed from limestone cliffs and shaped by natural erosion, this stone creates bold structures that evoke the beauty of mountainous landscapes. Its dramatic lines and vein patterns make it a favorite for Iwagumi aquascapes, nature-style scapes, and layouts that emphasize strength and contrast. Blue Mountain Seiryu brings timeless elegance and commanding presence to any aquarium design.
Origin: Southeast Asia – limestone-based stone
Water Chemistry Impact: Raises pH and hardness (KH & GH)
Compatibility: Great for neutral to hardwater tanks; safe for Neo shrimp, snails, and community fish
Restrictions: Caution with Caridina and other soft-water species; sand sharp edges before use
Aquascape Style: Rugged cliffs and sharp lines; highly popular in Iwagumi layouts
Placement: Dominant centerpiece stones, triangular groupings, or midground formations
Special Features: Blue-gray coloration, dramatic veins, iconic rugged structure
Water: Slightly raises pH and hardness; best for neutral to hardwater setups
Tank Size: Suitable for nano tanks to large aquascapes depending on stone size
Substrate Pairing: Pairs beautifully with light sands and vibrant plant growth
Design Tip: Use odd-numbered groupings to form balanced Iwagumi compositions
Appearance: Rugged stone with bold veins and sharp ridges
Color: Blue-gray base with pale mineral highlights
Texture: Angular, fractured surfaces with jagged detail
Impact: Creates powerful, mountain-like scapes with dramatic contrast
Preparation: Rinse thoroughly before placing in the aquarium; sand sharp edges if needed
Placement: Ensure stability when using as tall or stacked structures
Maintenance: May develop algae over time; vein patterns often enhance with light growth
Special Tips: Showcase as the main stone in Iwagumi layouts, supported by smaller companion stones
We ship orders within the contiguous United States. Ready-to-ship orders are processed within 1-3 business days. Please email us regarding the processing time on custom orders.