Seachem Onyx Gravel – 7 kg
Onyx Gravel™ is a premium aquarium substrate suitable for both freshwater and marine aquariums. Its smooth, natural grains provide an aesthetically pleasing base while promoting beneficial bacterial colonization and helping maintain stable water chemistry.
Key Features:
• Natural, smooth grains for an attractive aquarium substrate
• Supports beneficial bacterial growth for biological filtration
• Helps maintain stable water parameters
• Safe for fish, invertebrates, and plants
• Easy to rinse and maintain
Why It Matters:
A quality substrate is essential for healthy aquarium ecosystems. Onyx Gravel™ provides a stable surface for bacterial colonies that aid in waste breakdown, enhancing both water quality and the visual appeal 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
