$1.50 OFF Any one of the following: HTH® pH Plus®, HTH® pH Minus, HTH® Calcium Plus, HTH® Alkalinity Plus 50¢ OFF HTH® Any one of the following: 1 lb. bag of HTH® Shock ‘N Swim or HTH® Super Shock ‘N ...

The mother of all chlorine products. In its elemental form, chlorine is so poisonous it can be used as a WMD. Luckily, nature makes it safe by attaching other elements and stock-piling it as various ...