Water treatment and conditioning chemical and enzyme preparations used in pools and spas, namely, pH balancers, clarifiers, shock treatments, sequestering and chelating agents for preventing staining, scale, and rust in water from forming on pool and spa equipment, pipes and fittings; and pool and spa care chemical kits consisting of water treatment and conditioning chemical and enzyme preparations being pH balancers, foam and scum line reducers, sequestering and chelating agents for preventing staining, scale, and rust in water from depositing on pool and spa equipment, pipes and machinery and printed instructions for pool, spa and water care sold together therewith as a unit; chemically-treated nonmedical test strips for testing pH, alkalinity, and copper or sanitizer in water, all for household use and for distribution in retail and e-commerce channels