Its chemistry . The reaction point is chemical as are the reactions - negative and positive charges need to combine. Tracy yours sounds typical.

Note - All the coagulants mentioned can
remove phosphorus from water.
As phosphorus is an essential
plant nutrient, it may be necessary
to fertilize the pond after treating
it for turbidity. On occasion, phytoplankton
and clay can mutually
coagulate, so fertilizing to start a
phytoplankton bloom may also
clear water of suspended clay particles.

Last edited by ewest; 01/21/20 09:51 PM.