Veddelholzer Chlorine Mini Tabs. Fast Dissolving Chlorine Tablets for Small Pools, Hot Tubs & Whirlpools. Kills Algae, Prevents Algae Growth

Veddelholzer 180 Chlorine Mini Tabs. Fast dissolving chlorine tablets for hot tubs & swimming pool, children's pools & whirlpools. Pool Accessories Pool Cleaning & Disinfection hot tub chemicals

Bestway Floating Chemical Dispenser for Hot Tubs and Swimming Pools, 5 inch Chlorine Tablet Holder, Multi-Functional Chlorine Tablet Dispenser

EASYTEST Hot Tub Test Strips, 150 Strips Pool and Spa Test for pH,Total Alkalinity,Free Chlorine and Bromine, Accurate 3 in 1 Pool Water Testing Kit