CONTAINS: Langyouchem Total Alkalinity Increaser 2lb, Langyouchem Calcium Increaser 2lb, Langyouchem pH Plus 2lb, Langyouchem pH Minus 3lb, Test Strips, and our Hot Tub Tips ebook and Printable Hot Tub Guide & Log Book EFFECTIVE: Tested and proven Langyouchem products are reliable and help take the hassle out of your spa or hot tub care APPROVED: Langyouchem 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 fort Langyouchem TIncreaser raises total alkalinity level to prevent pH shifts which might cause equipment corrosion. Langyouchem Calcium Increaser effectively raises the calcium hardness level which helps prevent corrosion of equipment and etching of spa surfaces. Langyouchem pH Plus gently raises pH levels, improving the effectiveness of sanitizers and spa water fort. Langyouchem pH Minus lowers the pH levels improving the effectiveness of sanitizers and spa water fort. Over 10 Million Sold: Guaranteed to safely and thoroughly clean any non-fabric surface without streaking, or residues left behind 7 Years of Optimizing Based on Customer Feedback: Formulated by PhDs, the plant-based formula effectively removes food, soda, juice, grease, oil, sugar, pet accidents, fingerprints, footprints, lipstick, tree sap, grime, adhesives, soap scum, dirt, spills, streaks, residues, and hundreds more of life’s messes Use on Every Surface in Your Home: Sparkling, residue-free results on kitchen countertops, bathrooms, high chairs, electronics, smartphones, tablets, hardwood floors, finished wood, car dashboards, wheels, blinds, laminate, chrome, furniture, granite, glass, grills, jewelry, metal, painted surfaces, plastic, porcelain, ovens, quartz, sealed & unsealed stone, sinks, stainless steel, toilets, tables, toys, vinyl, walls, and any other solid surface 100% Satisfaction Guaranteed: Safe for Children, Pets, All Household Surfaces; Natural, hypoallergenic, gluten-free, vegan, biodegradable; Certified Cruelty-Free - Never Tested on Animals