Ryuoh is the language of mountains, jagged faces, deep cuts, and pale mineral veins that read like storm-split cliffs. Place a single ridge and the scape sharpens; compose a range and you get instant altitude, with silhouettes that photograph beautifully and hold attention from across the room. Under water the greys darken and the veins glow; in dry scapes the surfaces mattify into a cool, sculptural calm.

Let the ridgelines set the rhythm. Seat the tallest piece slightly off-axis to establish motion, then echo its fracture angles with supporting stones to create saddles, spurs, and natural fall lines where “water would move.” Keep negative corridors between masses so the scene breathes. Half-bury a few fragments to mimic talus, small choices that make the layout feel discovered, not arranged.

Ryuoh loves expressive lighting. Raking side light carves razor highlights along edges while clefts hold shadow for depth; soft top light turns the whole composition into a highland mist. Pair with pale sands like Heaven for crisp, classic Iwagumi contrast, or use a darker bed like Rocket sand to deepen the drama. Driftwood adds organic counter-lines; fine-leaf plants and moss soften tension without diluting structure. Veil bases with WIO Accents Grey Chips so your cliff faces step naturally into scree and foreground.

As a calcareous limestone, Ryuoh can gently lift pH and hardness over time, part of its authentic mineral signature. In soft water systems, routine changes or buffering keep parameters on track while you enjoy the stone’s unmistakable presence and scale. Used thoughtfully, it’s the fastest path to monumental cliffs, convincing perspective, and the iconic Iwagumi look.

• Key Points

  • Color: Layered grey with subtle beige/white mineral veins.
  • KIT Stone Sizes: Nano 3–16 cm; Box 3–20 cm; Mega 3–25 cm (typical mix).
  • Texture: Rugged cuts, sharp angles, and vertical micro-relief.
  • Composition: Natural limestone (calcareous).
  • Matching: Pairs with WIO Grey Chips; complements Ryuoh Boulders.
  • Results: Monumental cliffs, high contrast, expressive Iwagumi structure.
  • Ready to Use: Pre-washed; a quick rinse is optional to clear transit dust.
  • Water Chemistry: Calcareous, may raise pH and hardness over time.
  • Safety: Safe for fish, shrimp, and plants when used as directed.
  • Versatile: Ideal for aquariums, paludariums, and terrariums.
  • Packaging: Stone Boxes,  Nano 5 kg (≤45 cm tanks), Box 11 kg (≤60 cm), Mega 21 kg (≤90 cm). Combine Box+Mega ≈120 cm; 2×Mega ≈150 cm. Typical main stone: ~12–15 cm (Nano), 15–20 cm (Box), 17–25 cm (Mega).
  • Origin: Asia; selected and packed by WIO.
  • Care Level: Easy to Intermediate (due to mineral activity).
  • Why choose this: Choose Ryuoh for iconic, jagged structure and pale veining, perfect when you want classic Iwagumi drama and are comfortable managing mineral hardness.

• Usage

  • Pre-wash: Ready to use; brief rinse improves initial clarity.
  • Placement: Set the tallest ridge first; angle faces to catch light and define flow lines.
  • Standalone or Mixed: Combine with Accents Grey Chips for talus and slides.
  • Decorate & Plant: Contrast sharp edges with fine plants/moss; plant around bases; use WIO PlantGlue for epiphytes.
  • Filling the Tank: Add water gently; Pro Tip: pour over a plate or décor to protect contours.
  • Final Touch: Skim loose fines; start filtration; light haze clears within hours.
  • Maintenance: Vacuum debris; brush faces with WIO Maintenance Tools if algae appears.
  • Water Parameters (Calcareous): Monitor pH/kH; consider regular changes with osmotic/soft water or WIO water treatments to control mineral rise.

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