WIO Grey Fossil Stone Nano Rock brings rare metallic elegance, glittering depth, and sophisticated monolithic forms to nano scale — a highly metamorphic rock with bands of blocky crystals and a striking metallic grey surface that creates remarkable contrast with plants, perfectly sized for nano compositions.

Grey Fossil Stone Nano Rock carries the same sophisticated character as the full-size Grey Fossil Stone — a gneiss metamorphic rock containing bands of blocky crystals like feldspar alternated with flat, plate-like mica minerals representing some of the most advanced stages of metamorphosis. Its metallic grey surface has a distinctive glittering effect that catches aquarium lighting beautifully, creating an ever-changing visual display. Even at nano scale, the monolithic forms create an excellent sense of depth and high impact.

Sized between 3 and 10 cm, ideal for nano tanks under 40L. May slightly raise pH and water hardness; regular water changes keep hardness under control. Pre-washed and ready to use.

Key Points

• Color: Metallic grey with glittering effect
• Nano Scale: Sized 3–10 cm, ideal for tanks under 40L / 10 gal
• Monolithic Forms: Sophisticated shapes create instant depth and impact
• High Contrast: Glittering metallic surface creates remarkable contrast with plants
• Pre-Washed: Clean and ready to use, no soaking required
• Water Chemistry: May slightly raise pH and hardness
• Versatile Use: Ideal for aquariums, terrariums, and paludariums
• Safe for fish, shrimp, and sensitive species

Characteristics

• Type: Metamorphic rock (gneiss)
• Color: Metallic grey
• Texture: Highly textured monolithic forms with bands of blocky crystals
• Stone size: 3–10 cm
• Water Hardness: May slightly raise pH and hardness; regular water changes maintain stability

Availability at Cuboid Nature Aquarium

• 2 kg Bag: Assorted mix of stones, 3–10 cm

Usage

• Rinse briefly before use to remove any transport dust — pre-washed and ready for direct placement
• Use the most sculptural tower-shaped piece as the focal anchor; surround with supporting pieces at varying heights
• Place over substrate or WIO LandForms — avoid direct contact with glass
• Use WIO ScapeBound to secure if stacking or layering
• Control any alterations in pH and kH by regular water changes with osmotic or soft water
• Safe for fish, shrimps, and other aquatic animals

Available from Cuboid Nature Aquarium — Authorized Retailer for WIO.