BioGuard Lo ’n Slo ®

A granular pH decreaser made of 93.2% sodium bisulfate, used to lower pH and reduce total alkalinity in pools.

• The description claims it is safer to store, transport, and handle than liquid acid.
• The description claims it requires retesting and repeating treatments as necessary.
• The description claims it should not be added near metal fittings or allow pH to drop below 7.2.