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 Off-The-Wall Surface Cleaner Read more Bioguard Sun-Shield Chlorine Stabilizer Read more Bioguard Strip-Kwik Filter Cleaner and Descaler Read more Bioguard Super Soluble Chlorine Granules 2.25kg Read more