JNW Pool Test Strips, 7in1 Quick & Accurate Pool and Spa Test Strips, Pool Water Test Kit - 150 Bromine, pH, Hardness, Alkalinity, Chlorine Pool Water Tests, Spa and Hot Tub Test Strips with E-Book

JNW 7-in-1 Pool Test Strips, 150 Quick & Accurate Test Strips for Pool Water, Spa Test Strips for Hot Tub, Chlorine Test Strips, Bromine, pH, Alkalinity, Hardness & More - Swimming Pool Test Kit

HTH 42049 Pool Care 1" Chlorine Tabs, Swimming Pool Sanitizer with Added Clarifier - Eliminates Bacteria & Algae, Makes Water Clean & Crystal Clear, Sanitizes & Protects - Slow Dissolving, 1.5 lbs

ARM & HAMMER Clear Balance Swimming Pool Alkalinity pH Maintenance Tablets, White, 1 Pack, 24 Count