hundred gallons). Agitate solution well for at least two hours at 43 C (110 F).
Raise temperature to about 60 C (140 F) and continue agitation for at least two more hours.
Cool the solution to a temperature below 38 C (100 F), and add to the bath at least 750 g of finely powdered activated carbon per 100 Liters of solution (6 pounds per 100 gal). Continue to mix well for two hours. At the end of two hours, turn off agitation and allow solution to settle.
Without Heat
Add with stirring, 250 m