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.
Flourish Potassium™ Dosing Table
The following dosing tables provide the standard dose of Flourish Potassium™ for various water volumes. These dosing instructions apply to the 100 mL - 500 mL bottles. Please note that the 2L and 4L bottles of Flourish Potassium™ have larger cap volumes than the smaller bottles. This dose will increase the potassium by 2 mg/L.
|Water Volume||Dose in mL||Dose in caps||Dose in drops|
|1 quart (1 L)||0.04 mL||1/120 Capful||0.8 Drops|
|1 gallon (4 L)||0.16 mL||1/30 Capful||3.3 Drops|
|5 gallons (20 L)||0.83 mL||1/6 Capful||16 Drops|
|10 gallons (40 L)||1.7 mL||1/3 Capful||32 Drops|
|20 gallons (80 L)||3.4 mL||2/3 Capful||66 Drops|
|30 gallons (125 L)||5 mL||1 Capful||100 Drops|
|50 gallons (200 L)||8.5 mL||1 2/3 Capful||166 Drops|