having trouble starting a new thread (pool & computer idiot), however, I NEED HELP! I'VE read a lot about AA treatment to remove metal stains & have successfully done so, only to have stains return! My chemistry memory has failed me so I seem to be traveling more by the seat of my pants. It appears I need to be more diligent in lowering my pH to keep the stains from reappearing. Should this be done w muriatic acid? I have SWG system & have read that a "pulp based filter aid" should be used with the AA. Honestly, I have no idea what a pulp based filter aid is, where to get or how to use! HELP! FOR THE LOVE...