Enhance your aquarium with Seachem Onyx Sand, a specially fractured, stable, and porous clay gravel designed for the natural planted aquarium. Its dark gray appearance beautifully complements any aquarium, creating a visually stunning environment for your aquatic life.

Onyx Sand is not only aesthetically pleasing but also beneficial for your plants. Being carbonate-rich, it provides an advantage to plants that can utilize bicarbonates, promoting healthy growth and vibrant colors. While ideally suited for planted aquaria, this versatile sand can be used in any freshwater aquarium environment, making it a great choice for diverse setups like cichlid tanks.

This natural substrate is not chemically treated or coated, ensuring a safe and healthy environment for your fish and plants. Its porous nature allows for excellent root anchoring and beneficial bacteria colonization, contributing to a balanced ecosystem. Available in both 7 kg (15.4 lbs) sizes, Seachem Onyx Sand is a practical and beautiful addition to any aquarium.

• Specially fracted, stable porous clay gravel
• Ideal for planted aquariums and suitable for all freshwater environments
• Carbonate-rich to benefit plants utilizing bicarbonates
• Enhances aquarium aesthetics with its naturally dark gray color
• Not chemically treated or coated