ReeFlowers F-Colour contains pigments and elements that boost the colour of corals (particularly yellows reds and greens). The solution also speeds up the vital functions of aquarium inhabitants supports pH stability accelerates growth and helps maintain a healthier aquarium environment. It is recommended that 2 ml of solution is added for every 100 liters of water on weekly basis (for an average loaded aquarium). For long-term use no more than 4ml should be added for every 100 liters on weekly basis.It is recommended that the product be used in conjunction with ReeFlowers B-Color.