Midnight Black Aquarium River Pebble 4-6mm

Midnight Black Aquarium River Pebble 4-6mm is a striking, smooth-tumbled substrate that adds dramatic depth and contrast to any aquarium. The deep black tones create a stunning backdrop that makes fish colours and plant greens truly pop, while the smooth river-worn surface is gentle on delicate fish and bottom dwellers.

Further Information

• Type: Natural river pebble
• Grain Size: 4–6mm
• Colour: Deep midnight black
• Best For: Aquascaping, planted tanks, community fish, shrimp tanks
• Placement: Full tank base layer (recommended depth: 3–5cm)
• Skill Level: Beginner to Advanced
• Note: Rinse thoroughly before use

How Much Do I Need?

Standard tanks — guide only, tank footprint will determine quantity required:

• 60L tank → ~8kg
• 120L tank → ~16kg
• 200L tank → ~28kg

Planted tanks — we recommend a minimum of 2" (5cm) of substrate depth for healthy root development. Double the quantities above as a starting guide.