Fluval Bio-Stratum® Aquarium Substrate is specially formulated to recreate the natural riverbed environments found in tropical ecosystems. Derived from mineral-rich volcanic soil, this advanced substrate provides an excellent foundation for thriving aquatic plants while creating optimal conditions for shrimp, fish, and beneficial bacteria.

Designed for Beginners

For new aquarists, choosing the right substrate is critical. Fluval Bio-Stratum® simplifies planted aquarium care by naturally supporting plant roots without the need for additional fertilizers at setup. Its lightweight, porous structure allows roots to spread easily, helping plants establish quickly and grow stronger over time.

Supports Healthy Water Parameters

Fluval Bio-Stratum® gently buffers aquarium water toward a slightly acidic to neutral pH, which is ideal for most tropical fish, shrimp, and live plants. This makes it particularly beneficial for shrimp aquariums, as it helps support molting and overall health.

Encourages Beneficial Bacteria Growth

The highly porous granules provide a large surface area for beneficial nitrifying bacteria to colonize. This improves biological filtration, contributing to stable water quality and a healthier aquarium ecosystem.

Natural Appearance & Aquascaping Benefits

The dark, earthy color enhances the visual contrast of green plants and colorful fish, creating a professional aquascape appearance. Its fine texture is gentle on bottom-dwelling fish and shrimp while preventing debris from compacting deeply into the substrate.

Key Benefits

• Ideal for planted aquariums and shrimp tanks

• Promotes rapid root growth and nutrient absorption

• Supports beneficial bacteria and biological filtration

• Helps maintain stable, plant-friendly pH levels

• Natural appearance enhances aquascaping design

• Safe for freshwater fish, shrimp, and plants

Usage Tips for Beginners

• Rinse lightly if desired (do not over-rinse)

• Use a depth of 5–7 cm (2–3 inches) for planted tanks

• Avoid aggressive gravel vacuuming to preserve nutrients

• Suitable for use without additional base substrates