Seachem Onyx Sand – 7 kg
Onyx Sand™ is a high-quality substrate for freshwater and marine aquariums. Its natural, rounded grains provide an aesthetically pleasing base while supporting beneficial bacteria colonization and maintaining stable water chemistry.
Key Features:
• Natural, rounded grains for a realistic and attractive aquarium substrate
• Promotes beneficial bacterial growth for biological filtration
• Supports stable water parameters in freshwater and marine systems
• Safe for fish, invertebrates, and plants
• Easy to rinse and maintain
Why It Matters:
A high-quality substrate is essential for healthy aquarium ecosystems. Onyx Sand™ provides a stable surface for bacteria that aid in waste breakdown, while its natural appearance enhances the overall look of your aquarium.
Directions for Use:
• Rinse thoroughly before adding to the aquarium
• Layer to desired depth, typically 2–5 cm depending on tank setup
• Can be combined with fertilizers for planted freshwater aquariums
• Size: 7 kg
• Suitable for: Freshwater and marine aquariums
