General: FLOURISH POTASSIUM contains 50,000 mg/L of potassium suitable for the natural planted aquarium. Dosage: Potassium can become depleted in a rapidly growing system or when the source water has a low mineral content. In these cases potassium could become the limiting factor to growth. Use Flourish Potassium to prevent potassium depletion (signs of which include yellowing in older leaves). Other information: The most easily obtained sources of potassium are potassium nitrate and potassium phosphate. Both of these sources add to either nitrogen or phosphorus as well as potassium, making it virtually impossible to target a specific NPK ratio. Flourish Potassium is derived from potassium sulphate, allowing the user to adjust potassium levels without affecting nitrogen or phosphorus.
