Fluval Stratum is the perfect substrate for your betta fish tank! Infused with beneficial bacteria that helps maintain a balanced ecosystem. Fluval Betta Stratum Aquarium Soil is collected from the mineral rich foothills of the famous Mont Aso Volcano in Japan. This substrate stimulates growth of plants in freshwater tanks, provides nutrients for plants and helps support neutral to slightly acidic pH, ideal for most tropical fish and plants. The size and structure of this substrate allows plant roots to spread easily, and provides nitrifying beneficial bateria. It also provides new born shrimp with the ideal refuge, allowing them to escape predation until they are large enough to emerge. This highly attractive substrate will not discolour water and helps control organic discoloration usually present when natural driftwood is used. It will look fantastic against the contrasting color of your beautiful betta.