Reddit reviews Pot Perm Plus KP02N Greensand Iron Filter Regenerant, 1lb 12 oz (28 oz), Original Version

For each cubic foot of filter media, 2-4 ounces of dry Pot Perm iron filter regenerant is suggestedEight ounces of Pot Perm will dissolve in one gallon of water at room temperature 68 degree FahrenheitIt may be added directly to the filter or mixed with water and added as a solution#1 selling Greensand Iron Filter RegenerantProven performer for many, many, yearsNOTE : The bottle image shows 1lb 12 oz, which is the same as 28 oz. Because 1lb is 16oz, 16+12 equals 28oz.