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 5lb Rapid Shock $34.99 Add to cart Sale! Box of 12- 1 lb Bags of Rapid Shock – $89.99 $62.99 Add to cart 1lb Bag of NST Purify $14.99 Add to cart Pool Magic + Phos Free $35.99 Add to cart