Flourish is a growth stimulator for aquarium plant stems and leaves. It contains a broad spectrum of essential trace elements, vitamins, and amino acids. Flourish is rich in gluconate iron, manganese, calcium, magnesium, potassium, inositol, chlorine b12, biotin, and other factors that have been determined to be beneficial to aquatic plants. It contains no phosphate or nitrate or other fertilizers that would promote algae proliferation. A 100 ml bottle treats up to 5,000 gallons.