Seachem Flourish Potassium

Flourish Potassium™ contains 50,000 mg/L of potassium, which is appropriate for the naturally planted aquarium. Potassium is one of several elements that are essential for maintaining vigorous growth in a planted aquarium. Potassium can become depleted in a rapidly growing system or when the source water is low in minerals. In these cases, potassium can become the limiting factor for growth. Use Flourish Potassium™ to prevent potassium depletion (signs of this include yellowing of older leaves) and maintain the highest level of growth.

The most readily available sources of potassium are potassium nitrate and potassium phosphate. Both of these sources add either nitrogen or phosphorus as well as potassium, making it virtually impossible to target a specific NPK ratio. Flourish Potassium™ comes from potassium sulfate, allowing the user to adjust potassium levels without affecting nitrogen or phosphorus.