Flourish Potassium Aquarium Plant Supplement



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 and Flourish Phosphorus


Seachem Flourish Potassium



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 sulfate, allowing the user to adjust potassium levels without affecting nitrogen or phosphorus.


Use 1 capful (5 mL) for every 125 L (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 and roots.

Derived from: Potassium sulfate

Guaranteed Analysis

Soluble Potash (K2O) 5%

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