WIO Nano Rocks - Black Ryuoh

WIO Black Ryuoh Nano Stone brings graphite drama, vivid mineral veining, and razor-sharp mountain character to nano scale — graphite-black calcareous limestone slashed with vivid white quartz lines, perfectly sized for high-contrast Iwagumi compositions in tanks under 40L.

Black Ryuoh Nano Stone carries the same intense visual character as the full-size Black Ryuoh — fractured planes of graphite-black limestone with blazing white quartz veins that pop with extraordinary contrast. Even at nano scale, a single piece changes the scene: edges harden, veins blaze, and shadows pool deep. Wet, the blacks deepen and the veining intensifies; dry, the stone settles to a satin charcoal — always high contrast, never messy.

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

Key Points

• Color: Graphite-black with vivid white quartz veins
• Nano Scale: Sized 3–10 cm, ideal for tanks under 40L / 10 gal
• High Contrast: Vivid white veining blazes against graphite-black body
• Ideal for Iwagumi, cliff, and mountain-style nano aquascapes
• 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

Characteristics

• Type: Calcareous limestone
• Color: Graphite-black with vivid white quartz veins
• Texture: Fractured planes with sharp edges and deep clefts
• 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; 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 to make the veins sing; use dark substrates for tone-on-tone drama
• 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.

Inventory Accuracy

If this item is at low stock, or you are ordering all or almost all of our current inventory, there may be an inventory discrepency. We will contact you about any issues as soon as possible.

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Pipersville, PA 18947

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