KUMU GR-01 Flat River Gravel S 250 mL

KUMU Gravel Collection

KUMU gravels are carefully selected decorative substrates designed to add color, texture, and detail to aquascapes. Unlike functional substrates (soil, sand for plant growth), KUMU gravels are primarily aesthetic—used to highlight specific areas, create color accents, or add fine detail to layouts. Each gravel type is sized and sorted for consistency, making it easy to achieve the exact look you want.

KUMU GR-01 Flat River Gravel S (250 mL) — SKU 106-721

Flat-edged river gravel reminiscent of Japanese mountain streams. The small grain size and natural color variation make Flat River Gravel S ideal for recreating stream beds, pathways, or fine-detail accents in aquascapes.

Key Characteristics:

• Color: Mixed gray, tan, and brown tones with natural variation
• Grain Size: 5–10 mm (small, suitable for fine detail work)
• Shape: Flat, water-worn edges (not perfectly round—adds realism)
• Volume: 250 mL per pack (approximately 200–250 g depending on density)

Aquascaping Applications:

• Stream Bed Recreations: Scatter Flat River Gravel S along the foreground or midground to simulate a flowing stream
• Pathways: Create visual "paths" through carpet plants or between hardscape elements
• Fine Detail: Use sparingly to add texture and color variation to specific areas
• Contrast With Sand: Combine with fine sand (KUMU Ivory Sand S, Blond Sand S) for multi-texture substrates

Planting Strategy:

• Use Flat River Gravel S as a "river" running through your layout, flanked by carpet plants on either side
• Scatter gravel at the base of stones or driftwood for natural, weathered appearance
• Avoid using gravel under fine carpet plants—it can interfere with root establishment

Setup Tips:

2. Apply over base substrate (soil, sand) in targeted areas—don't use as the primary substrate

3. Use a spoon or tweezers to place gravel precisely

Maintenance: