Overview: Seachem Flourish is a nutrient-rich liquid fertilizer that contains an assortment of elements that are required for aquatic plants to thrive in an aquarium.Seachem Flourish is a comprehensive plant supplement for the natural freshwater aquarium. It contains a rich assortment of important micro elements, trace elements, and other nutrients. These include calcium, magnesium, iron and other important elements that have been shown to be beneficial to aquatic plants. A 250 mL bottle treats up to 12,500 gallons. It is also beneficial for household plants.Guaranteed Analysis Total Nitrogen 0.007% Available Phosphate (P2O5) 0.01% Soluble Potash (K2O) 0.37% Calcium (Ca) 0.14% Magnesium (Mg) 0.11% Sulfur (S) 0.2773% Boron (B) 0.009% Chlorine (Cl) 1.15% Cobalt (Co) 0.0004% Copper (Cu) 0.0001% Iron (Fe) 0.32% Manganese (Mn) 0.0118% Molybdenum (Mo) 0.0009% Sodium (Na) 0.13% Zinc (Zn) 0.0007% Derived from: Potassium Chloride, Calcium Chloride, Copper Sulfate, Magnesium Chloride, Ferrous Gluconate, Cobalt Sulfate, Magnesium Sulfate, Manganese Sulfate, Boric Acid, Sodium Molybdate, Zinc Sulfate, Protein Hydrolysates.