Maintain a Perfect Spa You Might Also Like All-in-One Sanitizer and Shock (3) Stabilized chlorinator for spas and hot tubs. Spa pH Protect (1) Helps to maintain pH. Spa Brominating Granules For low-odor sanitization. Spa Antifoam (4) Prevents and eliminates foam. Spa pH Up (1) To raise pH level in spas. Spa pH Down (1) To lower pH level in spas. Product reviews Write Review Clorox ph up up away Definitely a Clorox fan from here on out. Our spa agrees Ease of Use: Effectiveness: 01/19/2017 Jenn × Write Product Review Rating*Select Rating12345NicknameReview TitleEmail ReviewWould You Recommend This Product?*YesNoProduct Ease of UseEase Of Use1 – Difficult2345 – EasyProduct EffectivenessProduct Effectiveness1 – Not Effective2345 – EffectiveSize of PoolSize of PoolLess than 5,000 galMore than 5,000 galNumber of Years Maintaining PoolNumber of Years Maintaining Pool0-2 years3-5 years6-10 years11+ yearsWhere Did You Purchase This ProductWhere Did You Purchase This ProductWalmartLowe'sCostcoGrocery ChainHardware StoreOnlineOtherLocationWould you recommend Clorox® Pool&Spa™ to a friend?Would you recommend Clorox® Pool&Spa™ to a friend?0 – Never12345678910 – Definitely