KUMU ST-03 Yamaya Stone (300 g) — SKU 106-703
A bluish-black angular stone that creates striking contrast in planted aquariums. Yamaya Stone's dark coloration and sharp, faceted surfaces make it ideal for bold, minimalist layouts where the stone itself is the star. Despite its dramatic appearance, Yamaya Stone is surprisingly easy to work with—simple placement often yields impressive results.
Key Characteristics:
- Color: Deep bluish-black to charcoal gray with occasional lighter veining
- Texture: Smooth to moderately rough with angular, faceted surfaces
- Form: Blocky, geometric pieces with sharp edges and flat faces
- Weight: Approximately 300 g per pack
- Size Range: 30–80 mm individual pieces (typically 3–6 stones per pack)
Aquascaping Applications:
- Minimalist Iwagumi: Use Yamaya as dark, monolithic focal stones in simple compositions
- High-Contrast Layouts: Pair with white sand or light-colored substrates for maximum visual impact
- Modern/Contemporary Styles: The geometric, angular form suits architectural, less-naturalistic aquascapes
- Accent Against Green: Yamaya's dark color makes green plants appear even more vibrant and saturated
Chemical Properties:
Yamaya Stone is inert and does not significantly affect pH or water hardness. Safe for all aquarium types, including soft-water and acidic setups.
Combining Tips:
- With Itself: Yamaya's angular pieces stack cleanly. align flat faces for stable structures
- With Light-Colored Stone: Combine with Ryuoh Stone or Lichen Stone for dramatic color contrast
- With Sand: White or light sand (KUMU Branco Sand, Ivory Sand) creates a stark, high-contrast base
Planting Strategy:
- Use Yamaya as a bold focal stone with minimal planting—let the stone dominate the composition
- Plant carpets (Glossostigma, Monte Carlo) sparingly around the base to soften edges without overwhelming the stone
- Attach dark-colored mosses (Java Moss, Flame Moss) to enhance the monolithic appearance
Preparation:
2. No boiling required—Yamaya Stone typically sinks immediately
3. Optional: Scrub surfaces with a brush to remove any loose particles
Maintenance:
- Yamaya's relatively smooth surface sheds algae and detritus more easily than porous stones
- Wipe with a soft cloth or sponge during maintenance to keep the dark color vibrant
Why KUMU Yamaya?
Dark stones can look muddy or dull in aquariums, but KUMU's Yamaya selection emphasizes pieces with rich, saturated bluish-black coloration. The angular form and flat faces make these stones easy to position and stack—ideal for aquascapers who want bold simplicity without complexity.
Key Features:
- Designed for long-lasting performance and reliability
- Maintains the pristine aesthetic of your aquatic display
- Easy to install and integrate with existing equipment
- Manufactured to exacting quality standards
- Backed by extensive research and field testing
Specifications:
