Seachem Flourish is loaded with a rich assortment of important micro elements, trace elements and other nutrients that will help the plants in your natural freshwater aquarium thrive. This comprehensive plant supplement serves a growth stimulator for aquarium plant stems and leaves, preserving their health and keeping your aquatic environment looking beautiful. Seachem Flourish contains a broad spectrum of essential trace elements, vitamins and amino acids. It's also rich in gluconate iron, manganese, calcium, magnesium, potassium, inositol, chlorine b12, biotin and other factors that have been determined beneficial to aquatic plants. Flourish does not contain phosphate, nitrate or other fertilizers that promote algae growth. You'll enjoy a stunning tank with brimming with natural plant life. A 100-milliliter bottle treats up to 5,000 gallons of water. Seachem has been a trusted name in marine science for more than 35 years.