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| Regional areas: | 3-4 business days |
| Remote areas: | 3-5 business days |
Seachem Onyx Sand is a premium, deepblack aquarium substrate ideal for creating highcontrast, visually striking freshwater tanks. Its fine, natural grains provide a sleek and dramatic foundation that enhances the appearance of fish and décor. Aquariumready and easy to rinse, Onyx Sand offers a stable base suitable for both planted and community aquariums.
Fine black sand substrate
Deep, uniform black color for dramatic aquarium contrast
Easy to rinse and aquariumready
Stable foundation for décor, fish, and plants
Suitable for freshwater aquariums
Enhances visual appeal with a clean, bold black substrate
Provides a smooth, natural base for aquatic setups
Helps maintain clearer water with minimal residual dust
Suitable for a range of aquarium styles, from planted to community tanks
Longlasting and low maintenance
Rinse Seachem Onyx Sand thoroughly with clean water before use
Spread evenly across the aquarium bottom
Use a depth of 23 inches (57cm) depending on setup needs
Place décor, rocks, or plants as desired
Add water slowly to avoid disturbing the sand
Perform gentle vacuuming during maintenance to keep sand clean
