Seachem Flourish 250ml (8.5 fl.oz). Is a growth stimulator for aquarium plant stems and leaves. It contains a broad spectrum of essential vitamins, trace elements and amino acids. Flourish in gluconate iron, manganese, calcium, magnesium, potassium, inositol, choline vitamin B12 and biotin and other factors determined to be beneficial to plant growth. It contains no phosphate, nitrate or fertilizers that may lead to unwanted algae growth. A 100mL bottle treats 160L (40 gallons) for 4-6 months. House plants also derive similar benefits