when clay is allowed to sit without disturbance it will come out of
solution. As long as it is agitated it wont. hydrophilic doesnt mean
positively charged in the sense of NaCl which has an ionic bond which is +
charged. Calcium (Ca++) added to water will help precipitate the clay as
will Alum or aluminum sulfate. This helps the clay clump together. Then a
good polyester batting is needed to filter it all out. Ingrid

Or if you wait long enough, they will settle you out on their own,
costing
you a whopping sum of zero.

No they wont. The clay particles are positively charged making them
hydrophilic