Advantages: 1. W. processing: Matures freshwater. In case of first installation and exchange of water as well. 2. pH-Buffer: Regulary used, it will keep the water constantly at pH 6-6,5. 3. Regulating factor of algae: The growth of algae will be hold to the most favourable extent. 4. Protecting colloid: Improves the power of resistance of the fish. 5. Anti-stress complex.