Initial pH was below 2, so it was adjusted to 6.5 to 7.5 using caustic. This lowers the solubility of the metals, and helps the Floccin to work better.
The Floccin-1105 worked well at a dosage of 2.1 grams/ 1,000 ml of wastewater (treatment dosage of .9 lbs. of Floccin-1105 to 50 gallons of wastewater).
The treated pH was 6.5 to 7. The floc formed very solidly and clarity of the treated water was good.