WATER PURIFYING AND TREATMENT CHEMICALS FOR SWIMMING POOLS, SPAS, HOT TUBS, AND BATHS, NAMELY, WATER CHLORINATING CHEMICALS, ALGAECIDES AND SLIME REMOVERS FOR WATER, BALANCERS FOR ADJUSTING AND BUFFERING PH, TOTAL ALKALINITY, AND HARDNESS OF WATER, CHLORINE AND NON-CHLORINE SHOCK TREATMENTS FOR OXIDIZING WATER CONTAMINANTS, CLARIFIERS FOR AGGLOMERATING PARTICLES SUSPENDED IN WATER TO FACILITATE FILTERING, REACTING WITH ORGANIC CONTAMINANTS IN WATER, PREVENTING SCUM LINES, FILTER CLOGGING AND CLOUDINESS IN WATER, AND PREVENTING FLOATING AND DIVING INSECTS FROM GATHERING ON A WATER SURFACE, COAGULATING AGENTS FOR PRECIPITATING FLOATING DEBRIS AND UNFILTERABLE MATERIAL IN WATER, FOAM REDUCERS FOR WATER, STABILIZERS FOR STABILIZING CHLORINATED WATER AGAINST ATTACK BY SUNLIGHT, STAIN CONTROLLERS, NAMELY SEQUESTERING AGENTS FOR PREVENTING STAINING, SCALE, AND RUST IN WATER FROM DEPOSITING ON POOL EQUIPMENT, PIPES AND FITTINGS, TEST STRIPS FOR TESTING THE PH, ALKALINITY, CHLORINE OR BROMINE CONCENTRATION IN WATER, AND WATER TREATMENT AND TEST KITS COMPRISING WATER PURIFYING AND TREATMENT CHEMICALS AND TEST STRIPS FOR CONTROLLING AND TESTING THE PH, ALKALINITY, CHLORINE OR BROMINE IN WATER.