Colombo Flora Base Pro Fine 10L – Nutrient-Rich Aquarium SubstrateFloraBase Pro is a unique base, made in Japan. The pellets remain their shape and do not disintegrate. FloraBase Pro is rich in nutrients the open structure provides for healthy roots. FloraBase Pro reduces and stabilizes the pH value to 6. With a pH value of 6, there is a sufficient amount of CO2 available for healthy plant growth. The CO2 level of the water is of great importance for optimal plant growth. In the chart, you can see that the CO2