Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bisulfate (pH Decreaser) $69.99 50lb bag of Sodium Bisulfate (pH Decreaser) quantity Add to cart SKU: AAA-8617 Categories: Chemicals, Chlorine Free, Chlorine/Bromine, Clarifiers/Maintenance, Pool Product ID: 2222 Description Description Used to lower the ph/alkalinity in pool water. Chemicals/Pools/Chlorine & Chlorine Free/ Maintenance Related products Sale! 4.8lb 3″Chlorine Tablets $49.99 Original price was: $49.99.$44.99Current price is: $44.99. Add to cart Case of 4 – Oxidizer (Shock) $113.74 Add to cart Sale! 5lb Turbo Shock $42.99 Original price was: $42.99.$36.99Current price is: $36.99. Add to cart Pool Magic + Phos Free $35.99 Add to cart