Home / Chemicals / Pool / Chlorine/Bromine / 50lb bag of Sodium Bisulfate (pH Decreaser) “Pool Magic + Phos Free” has been added to your cart. View cart $69.99 Available on backorder 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! 4lb MPT Extra Chlorine Tablets $49.99 Original price was: $49.99.$38.99Current price is: $38.99. Add to cart Sale! Case of 4 – Oxidizer (Shock) $107.99 Original price was: $107.99.$87.99Current price is: $87.99. Add to cart Pool Magic + Phos Free $35.99 Add to cart Sale! Box of 12- 1 lb Bags of Turbo Shock $131.99 Original price was: $131.99.$86.99Current price is: $86.99. Add to cart