⚫ Seachem Flourite Onyx Sand – 15.4 lb Bag

📖 Overview The Seachem Flourite Onyx Sand is a premium, mineral-rich substrate designed for planted freshwater aquariums. With its elegant dark gray to black coloration, it creates a dramatic aquascape while providing essential nutrients to support strong plant growth. Its fine, smooth texture makes it suitable for delicate plant roots and bottom-dwelling fish. Unlike coated substrates, Flourite Onyx Sand is long-lasting and will not break down, making it a permanent solution for planted tanks.

🌟 Key Features

• ✅ Nutrient-Rich: Enhances root development and plant health
• ✅ Striking Dark Gray-Black Color: Provides contrast to highlight fish and plants
• ✅ Fine Sand Texture: Safe for bottom dwellers like corydoras and loaches
• ✅ Permanent Substrate: Does not deplete nutrients or require replacement
• ✅ Safe for Aquariums: Stable and won’t significantly alter pH under normal conditions

📐 Product Details

• Brand: Seachem
• Product: Flourite Onyx Sand
• Weight: 15.4 lb (7 kg) bag
• Grain Size: Fine sand
• Color: Dark gray to black
• Best For: Freshwater planted aquariums and aquascapes

❓ FAQ

Q: Is Flourite Onyx Sand safe for bottom dwellers?
A: Yes, its smooth fine sand texture is gentle on fish like loaches and corydoras.

Q: Does Onyx Sand alter water chemistry?
A: It may slightly buffer water hardness and pH, which can benefit certain planted setups.

Q: Do I need to rinse before adding?
A: Yes, rinsing helps minimize initial cloudiness when first placed in the tank.