Flourish Potassium

Flourish Potassium is a highly concentrated potassium supplement for the natural freshwater planted aquarium. 1 ml treats 10 gallons. Repeat 2-3 times a week, as needed. A 250 ml bottle raises the potassium level by 10 mg/l in 1,000 liters.

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Derived from: Potassium Sulfate

Elemental potassium is present at a concentration of 50,000 ppm (e.g 5%). Archaic fertilizer laws require us to list potassium in terms of equivalence to a material that is not present (K2O) rather than the more scientifically sound method of simple elemental equivalence.