CAL PLUS The use of Cal Plus prevents the etching of concrete surfaces... » DRY ACID Dry Acid is used for the reduction of Total Alkalinity and pH in swimming pools and spas. » EZI BALANCE EZI Balance is a spa pH anchoring product... » PH BUFFER pH Buffer is used to raise the Total Alkalinity of swimming pool... » PH INCREASER pH Increaser assist in maintaining correct pH in pools prevents wrinkling of liners. » PHIX One shot pH decreaser. » PROTEC CHLORINE STABILISER Focus Protec Chlorine Stabiliser is used for preventing the loss of chlorine to UV rays from sunlight. »