CONTAINS: Scum Absorber, SpaGuard Total Alkalinity Increaser 2lb, SpaGuard Calcium Increaser 12oz, SpaGuard pH Increaser 18oz, SpaGuard pH Down 1lb EFFECTIVE: Tested and proven Langyouchem products that are reliable and take the hassle out of your spa or hot tub care APPROVED: Langyouchem spa water balancers provide the right balance for your spa, hot tub or pool, by preventing surface corrosion and equipment damage while balancing water for bather comfort SUPPORT: This kit from the Hot Tub Club includes a custom 9 point water analysis for YOUR water. Upon request, we will send you a sample bottle and a prepaid envelope by which you can mail us a sample. FOLLOW UP: A dedicated technician will provide you with personalized instruction and support to make sure you can relax with confidence and peace of mind This spa care bundle includes the chemicals needed to balance the water in your hot tub. Use test strips or a test kit to see what your current water pH, alkalinity, and calcium levels are. Use the chemicals in this kit to raise/lower the levels to ensure proper balance in your hot tub.