Premium Black Lava Sand Substrate & Filter Media (3-5mm) - 500g

Create a thriving, natural ecosystem for your aquatic plants and beneficial bacteria with Premium Black Lava Sand, available at www.onyxaqua.com. This highly porous, 3- 5 mm volcanic aggregate serves as both a nutrient-rich substrate for aquascaping and an exceptional biological filter media for your setup.

Key Features & Benefits

• Massive Biological Surface Area: The naturally porous, honeycomb-like structure provides an enormous surface area for beneficial nitrifying bacteria to colonize, drastically improving your tank's bio-filtration.

• Optimal Root Growth: The coarse 3-5mm grain size prevents harmful soil compaction, allowing for excellent water circulation and promoting healthy, robust root systems for your aquatic plants.

• Natural Mineral Richness: Slowly releases essential trace minerals such as iron and magnesium, which support vibrant plant coloration and overall shrimp health.

• Dual Application: Highly versatile; use it as a primary planted tank substrate, a foundational base layer beneath active soil, or pack it directly into canister filters as a premium biological media.

Technical Specifications

To prevent cloudiness, rinse the lava sand thoroughly in a bucket of water before introducing it to your aquarium to remove any natural volcanic dust. Once settled, its dark, textured appearance provides a stunning, high-contrast backdrop that makes the vibrant colors of your fish and green plants truly pop.