Pure Water Pebbles Jet Black Aquarium Gravel (Grain size: 3.1-6.3mm). Perfect for decorating aquariums and ponds to make the floor bottom look great! This gravel provides living space for beneficial microbes and anchoring for plants. It also helps with the filtering process of the water in your aquarium tank or pond by increasing the surface area available for nitrifying bacteria to colonize.
- Natural River Gravel
- 100% Acrylic Coating
- Will not alter the chemistry of your aquarium water
- Non-toxic
- Colorfast