Pool Chemicals Pool chemicals are important to keeping your pool water crystal clear and safe to swim in Hi-Chlon Calcium Hypochlorite 70% 45kg Swim Best USA pH MINUS (Dry Acid) NiClon Calcium Hypochlorite 70% 45kg Pool Pals ph Down 7 lbs Pooltrine 60 Algae Control, 32 fl. oz. Swim Best Natural Clarifier Load More