Home / Chemicals / Bioguard Balance-Pak-300 Calcium Hardness Increaser Bioguard Balance-Pak-300 Calcium Hardness Increaser Balance Pak 300 is a unique formulation for faster dissolving and less cloudiness. It boosts calcium hardness to help prevent equipment corrosion, etching of plaster and wrinkling of liners Category: Chemicals Tag: Bioguard Spread the love Related products Bioguard Alum-Powder Flocculant Read more Bioguard Balance-Pak-200 pH Increaser Read more Bioguard Strip-Kwik Filter Cleaner and Descaler Read more Bioguard Burn Out – Pool Oxidizer Read more