AquaAce Spa Hot Tub pH Down, 3 Pound (48 Ounces), Made in USA, pH Decreaser and Alkalinity Reducer for Hot Tubs and Spas

Poolmaster 22211 Smart Test 4-Way Swimming Pool and Spa Water Chemistry Test Strips, 50 count

Bluewater Chemgroup Spa and Hot Tub Defoamer - Quickly Takes Foam Down - 32 Ounce Quart

Clorox Pool&Spa pH Up, 4-Pound 19004CLX

Clorox Pool&Spa 23006CLXCA Xtra Blue Chlorinating Granules 6-Pound

AquaChek 552244 6-in-1 Test Strips for Spas and Hot Tubs

Spa Essentials 32362000 Brominating Concentrate Granules for Spas and Hot Tubs, 2-Pound

LEISURE TIME Spa Cleaner Bright and Clear (30200A)

Bluewater Chemgroup Spa & Hot Tub Scale Remover, 32oz, Attack and defend Lime and Scale Build Up

SpaGuard Spa Total Alkalinity - 2 Lb

LEISURE TIME Spa Test Chlorine Spa Test Strips 50 count (45010A)