WIO Ryuoh Nano Stone brings the language of mountains — jagged faces, deep cuts, and pale mineral veins — to nano scale, perfectly sized for Iwagumi compositions and detailed highland scapes in tanks under 40L.

Ryuoh Nano Stone carries the same iconic jagged character as the full-size Ryuoh Stone — fractured planes, stepped ridges, and glowing pale quartz veins against deep grey calcareous limestone. Place a single piece and the nano scape sharpens instantly; compose a full arrangement and you get a convincing miniature cliff landscape with silhouettes that photograph beautifully. Under light the veins glow; between pieces shadows pool for scale and depth.

Sized between 3 and 10 cm, ideal for nano tanks under 40L. As a calcareous limestone, Ryuoh may gently raise pH and hardness over time; routine water changes keep parameters steady. Pre-washed and ready to use.

Key Points

• Color: Grey with pale white mineral veins
• Nano Scale: Sized 3–10 cm, ideal for tanks under 40L / 10 gal
• Iconic Iwagumi Stone: Jagged fractured planes with razor-sharp presence
• Mountain Character: Delivers instant altitude in the smallest tank
• Pre-Washed: Clean and ready to use, no soaking required
• Water Chemistry: Calcareous — may gently raise pH and hardness over time
• Versatile Use: Ideal for aquariums, terrariums, and paludariums
• Safe for fish, shrimp, and sensitive species
• Pairing Tip: Combine with Ryuoh Nano Boulders for mixed angular and rounded compositions

Characteristics

• Type: Calcareous limestone
• Color: Grey with pale white mineral veins
• Texture: Jagged fractured faces with deep cuts and ridgelines
• Stone size: 3–10 cm
• Water Hardness: Calcareous — may gently raise pH and hardness; regular water changes maintain stability

Availability at Cuboid Nature Aquarium

• 2 kg Bag: Assorted mix of stones, 3–10 cm

Usage

• Rinse briefly before use to remove any transport dust — pre-washed and ready for direct placement
• Seat the tallest piece slightly off-axis to establish motion; echo its fracture angles with supporting stones
• Place over substrate or WIO LandForms — avoid direct contact with glass
• Use WIO ScapeBound to secure if stacking or layering
• Pair with pale sands like Heaven for crisp, classic Iwagumi contrast
• Control any alterations in pH and kH by regular water changes with osmotic or soft water
• Safe for fish, shrimps, and other aquatic animals

Available from Cuboid Nature Aquarium — Authorized Retailer for WIO.