Decorative Aquarium Gravel ZOOLOGIA Aqua Natura Rzeka Bolivar 2–5 mm, 0.8 kg

ZOOLOGIA Aqua Natura Rzeka Bolivar decorative aquarium gravel, grain size 2–5 mm, weight 0.8 kg, is a natural-looking substrate intended for freshwater aquariums and terrariums. The gravel creates a riverbed-like appearance and provides a stable surface for plant roots and decor elements. Its rounded grains and moderate grain size help maintain water circulation within the substrate and allow for effective mechanical and biological filtration when used as part of a planted or community aquarium setup.

Advantages

This aquarium gravel offers a consistent grain size distribution of 2–5 mm, producing a uniform riverbed texture that is visually natural and easy to arrange. The small 0.8 kg package is convenient for small tanks, aquascaping accents, or mixed-media decorative layers. The rounded particles reduce damage to delicate roots and fins while providing sufficient interstitial space for beneficial bacteria to colonize, supporting biological filtration. The material is suitable for direct use after proper rinsing and does not contain added dyes or coatings that could affect water parameters.

Suitable for

• Freshwater aquariums of small to medium size
• Planted tanks as a decorative top layer or mixed substrate
• Terrarium decoration and paludarium layouts
• Aquascaping projects and riverbed-style layouts

Key specifications

• Grain size: 2–5 mm
• Net weight: 0.8 kg
• Color and texture: natural riverbed tones with rounded grains
• Intended use: freshwater aquariums, terrariums, aquascapes

How to use

Before adding the gravel to an aquarium, rinse thoroughly under running water until the rinse water runs clear to remove dust and fines. Add a 1–3 cm layer for decorative accents or a thicker 3–5 cm layer where plant anchoring is required, ensuring even distribution across the tank bottom. When used with live plants, consider combining with nutrient-rich substrate below the gravel layer for long-term growth. Perform routine maintenance such as partial water changes and gentle vacuuming of the surface to prevent accumulation of debris while preserving beneficial bacterial colonies within the substrate.

Usage recommendations

Rinse before use; avoid aggressive vacuuming that removes the entire substrate layer. For planted aquariums, pair with a dedicated plant substrate beneath this decorative gravel to support root nutrition and long-term plant health.