Write a review Use test strips or test kit to measure ph. The ideal pH for pool water is between 7.2 and 7.6. Follow dosage chart on CLOROX Pool&Spa pH Down to adjust pH as needed. SKU: 43106076 MFG: 12105CLX Shop more products by Clorox. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping not available to AK,AE,AA,AE,AE,AE,AP,GU,HI,PR,VI Free shipping over $35 $10.25 Quantity 3 6 9 12 15 18 21 24 27 30 In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Size : 5 lbs Composition : Sodium hydrogensulphate, Sodium sulphate Form : Solid Granules Odor : Sulphurous p H Range : FEATURES MFR: 12105CLX SKU: 43106076 UPC: 810821023047 Brand: Clorox Attachments: MSDS Sheets,