|Seachem Flourish Potassium contains 50,000 mg/L of potassium suitable for the natural planted aquarium. Potassium is one of several elements that are vitally important to maintaining a vigorous level of growth in a planted aquarium.
Features: Potassium supplement for the planted aquarium, Highly concentrated (50,000 mg/L), Does not contain phosphate or nitrate making it ideal for use with Flourish Nitrogen & Flourish Phosphorus.
Directions: Use 1 capful (5mL) for every 125L (30 US gallons). This dose raises potassium by 2 mg/L. Repeat 2-3 times per week or as needed in response to signs of potassium deficiency in older leaves which include: chlorosis (yellowing), necrosis (death/browning), pinholes in leaves, and weak stems & roots.