Originally posted by M Spinhirne:
As the others have stated, using coagulants like alum or ferric can be tricky due to the lowering of the pH and the reduction of alkalinity.
M,
Wouldn't only EXCESS alum lower the pH?
Suppose you had a pond that finally required exactly 50 pounds of alum to just clear it. Wouldn't the first 49.99 pounds attach to suspended clay particles and settle to the bottom?
Educate me!
