Aquarium and terrarium polished black pebble gravel Terra Natura 10–20 mm, 10 kg pack

Polished black pebble gravel by Terra Natura, sized 10–20 mm and supplied in a 10 kg pack, is intended for use as substrate or decorative top layer in aquariums and terrariums. The smooth, polished surface and dark color create visual contrast with plants, driftwood and tank equipment while providing a stable, non-abrasive base for inhabitants. Stones are natural in appearance and are suitable for freshwater setups, planted aquaria, reptile and amphibian enclosures and ornamental landscaping.

Advantages

The polished finish reduces sharp edges and minimizes debris accumulation, making the gravel easier to maintain and gentle on fins and delicate skin. The 10–20 mm grain size offers good stability for plants with large root systems and for animals that require firm footing. Dark coloration enhances the perceived depth of the habitat and highlights plant and animal colors without altering water chemistry when used as intended in freshwater systems.

Suitable for

• Freshwater aquariums and planted tanks
• Reptile and amphibian terrariums
• Ornamental garden accents and small water features
• Top dressing over existing substrate for aesthetic contrast

Key specifications

• Material: natural polished pebble
• Grain size: 10–20 mm
• Pack weight: 10 kg
• Surface finish: polished, smooth
• Color: black

How to use

Rinse the pebbles thoroughly with clean water before adding them to any aquarium or terrarium to remove dust from packing and transport. Spread an even layer according to the needs of the species and design; typical depths are 2–5 cm for decorative top layers and 3–6 cm where stability for plants or burrowing species is required. Avoid using in systems that require specific inert substrates for pH buffering unless compatibility has been confirmed. Arrange larger stones or décor pieces first, then place pebbles to achieve the desired visual effect and surface stability.

Usage recommendations

For aquariums, perform regular vacuuming of the gravel surface during water changes to remove organic matter. In terrariums, spot-clean and replace soiled pebbles as needed to maintain hygiene. When using with live plants, combine with a nutrient substrate or root tabs as required for plant nutrition. Handle with care when repositioning to avoid scratching glass or acrylic.