Black Ryuoh Stone is the dark evolution of the iconic Ryuoh — a commanding graphite-black limestone etched with striking white quartz veins. Instantly architectural and unapologetically bold, it brings power, precision, and contrast to any aquascape. One placement is all it takes to define the scene.
Fractured planes and stepped ridges create natural drama, while tight crevices catch light and shadow in perfect balance. When wet, the stone deepens to a rich jet-black that amplifies its white veining; when dry, it settles to an elegant charcoal satin — always crisp, always clean.
For Iwagumi purists and design-driven aquascapers alike, Black Ryuoh rewards composition with energy and clarity. Build layered cliffs, jagged peaks, or bold ridgelines that guide the eye like flowing water. Side lighting brings out razor-sharp detail, while soft overhead light delivers cinematic calm.
Pair with pale substrates like WIO Heaven Sand for dramatic contrast, or darker bases for subtle monochrome harmony. Blend edges naturally with WIO Accents Dark Grey Chips and fix moss or epiphytes using WIO PlantGlue for a professional finish.
As a calcareous limestone, Black Ryuoh may gently raise pH and hardness over time — a natural, biotope-accurate trait that’s easily balanced with regular water changes. Safe for all livestock when parameters are monitored.
Every piece is 100% natural and unique in form, texture, and tone. Available in multiple sizes to suit both nano and large-scale aquascapes.
Origin: Sourced responsibly and hand-selected for visual impact.
Note: Plants not included; each stone is unique in shape, color, and character.
