Pure Water Pebbles Blue Lagoon Aquarium Gravel 5LBS (Grain size: 3.1-6.3mm). Use them in your aquariums and ponds to make the floor bottom look great. It 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 Aquarium Gravel
- 100% Acrylic Coating
- Will not alter the chemistry of your aquarium water