Potassium Chloride Calculator

I have been dosing Get Tanked's Potassium Chloride for the past few months and wanted to share how to calculate the amount of potassium to be added to our reef tanks. Potassium chloride is 52.5% by weight potassium. With this calculator, use the calcium to find your potassium. Desired potassium should be between 390 and 400 mg/L. Select Anhydrous CaCl2 (Dow's Peladow) and enter your current and desired potassium values. When entering in your systems water volume make sure to include the live rock and sand displacement (8.556 pounds of rock/sand displaces one gallon of saltwater). After you find how much "calcium" to add, multiply this result by 0.7 to find how much calcium needs to be added.