Fluval Bio-Stratum Plant & Shrimp Substrate – 4.4 lb (2 kg)

Fluval Bio-Stratum Plant & Shrimp Substrate – 4.4 lb (2 kg)

Fluval Bio-Stratum 4.4 lb is a premium active volcanic soil designed for planted aquariums and shrimp tanks. This nutrient-rich substrate supports strong root development while promoting the growth of beneficial bacteria that help maintain a stable nitrogen cycle.

Its lightweight porous granules create an ideal environment for biological filtration and plant growth. Fluval Bio-Stratum also gently buffers aquarium water toward a slightly acidic pH, making it especially beneficial for freshwater shrimp, live plants, and soft-water fish species.

The 4.4 lb (2 kg) bag is perfect for nano aquariums, aquascaping layouts, and small planted tank setups.

Active volcanic soil • Supports beneficial bacteria • Ideal for shrimp and planted aquariums.

Key Features

🌱 Promotes strong plant root development
🦐 Shrimp-safe substrate – supports healthy molting and breeding
🦠 Encourages beneficial nitrifying bacteria growth
🌋 Natural volcanic soil with porous granules
💧 Helps maintain slightly acidic pH conditions
🐠 Designed for freshwater aquariums and planted tanks

Product Details

Brand: Fluval
Product: Bio-Stratum Plant & Shrimp Substrate
Weight: 4.4 lb (2 kg)
Substrate Type: Active volcanic soil
Color: Dark brown / black
Aquarium Type: Freshwater

Ideal For:

• Shrimp tanks
• Nano planted aquariums
• Aquascaping layouts
• Soft-water community fish tanks

Aquascaping & Use Tips

• Recommended substrate depth: 1.5–2.5 inches
• Do not rinse before use, as this removes beneficial nutrients
• Can be used alone or lightly capped with sand
• Excellent for plants such as crypts, stem plants, mosses, and carpeting plants
• Root tabs may be added for heavy root-feeding plants

Frequently Asked Questions

How is Bio-Stratum different from Fluval Stratum?

Bio-Stratum is formulated to promote beneficial bacteria colonization, helping biological filtration establish faster in new aquariums.

Is Bio-Stratum safe for shrimp?

Yes. Fluval Bio-Stratum is commonly used in shrimp breeding tanks and planted shrimp aquariums.

Does Bio-Stratum affect water parameters?

Yes. It gently buffers water toward a slightly acidic pH, which many shrimp and plants prefer.

Should Bio-Stratum be rinsed before use?

No. Rinsing can remove beneficial nutrients and reduce its effectiveness.

What aquarium size does 4.4 lb cover?

A 4.4 lb bag typically works well for 5–10 gallon aquariums, depending on the substrate depth used.