Seachem Flourish is a comprehensive plant supplement for the natural freshwater aquarium. Its rich assortment of important micro elements, trace elements and other nutrients promotes healthy, vigorous growth, health and color in aquatic plants. Comprehensive freshwater aquarium plant supplementContains rich assortment of important micro elementsHelps keep plants healthy and beautifulSeachem Flourish provides essential micronutrients to encourage vigorous, healthy growth of live freshwater aquatic plants, including calcium, magnesium, iron and other important elements with proven benefits for aquatic plants. This base of micro-nutrients supports macro element (NPK) fertilization in your aquarium. Flourish provides a wide variety of micro-nutrients, but may also be used with nutrient-specific supplements (including Flourish Nitrogen, Flourish Phosphorus or Flourish Potassium) as needed. Other manufacturers try to include ALL necessary nutrients in one supplement, leading to overdoses of micro-nutrients in an attempt to raise macro-nutrient levels. Directions: Use 1 capful (5 mL) for each 250 L (60 gallons) once or twice a week. For smaller doses, please note that each cap thread is approximately 1 mL. Refrigeration after opening is recommended but not required. Guaranteed Analysis: Total Nitrogen - 0. 07% Available Phosphate (P2O5) - 0. 01% Soluble Potash - 0. 37% Calcium (Ca) - 0. 14% Magnesium (Mg) - 0. 11% Sulfur (S) - 0. 27% Boron (B) - 0. 009% Chlorine (Cl) - 1. 15% Cobalt (Co) - 0. 0004% Copper (Cu) - 0. 0001% Iron (Fe) - 0. 32% Manganese (Mn) - 0. 01% Molybdenum (Mo) - 0. 0009% Sodium (Na) - 0. 13% Zinc (Zn) - 0. 0007%