stain removal process

stain remover requires filter aide 2b added b4 appication.  How much for 100 lb media sand filter.

Any downloadable primer 4 “FORM” use?  too many choices to acquire answers

stain remover requires filter aide 2b added b4 appication.  How much for 100 lb media sand filter.

Any downloadable primer 4 “FORM” use?  too many choices to acquire answers

Found that IF, if ya need it, 1 cup pe 100 lbs of sand