Fritz RPM Part 1 Liq Alkalinity 3.8L/1 gal (FR80303) Highly Concentrated Carbonate Alkalinity Add in Equal Parts with Fritz RPM Pt 2 Calcium Individual Alkalinity, Calcium, and Magnesium Formulas Great for Dosing Systems Same High Quality...

Fritz Coppersafe 473ml/16oz (FR42060) Chelated copper treatment for the infections of: Long Lasting Formula - No Repeat Doses Necessary No Need to Adjust Filtration Safe for Use with All Water Conditioners Can Be Used with Other Meds Great...

Fritz pH Neutralizer 227g/8oz (FR80284) pH Adjuster for Fresh and Saltwater Provides a healthy, stable pH 7.0 Safe for Fresh and Saltwater Systems Concentrated Formulas for Value Also Removes Chlorine and Chloramine for a One-Step Tap Water...