Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bisulfate (pH Decreaser) View cart “1lb Bag of Turbo Shock” has been added to your cart. $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! 20lb 1″ Chlorine Tablets $189.99 $174.99 Add to cart Case of 4 – Oxidizer (Shock) $113.74 Add to cart 7.5lb Alkalinity Up $32.99 Read more 5lb Rapid Shock $34.99 Add to cart