GLB Calcium Hardness Up, 15 lb | 71251A Zinc Anodes 000 gallons per month to

000 gallons per month to never worry about stains again

Pentair R141036 Rainbow #127 Thermometer

flat steps with non-slip texture

Replacing all four cartridges at the same time ensures consistent flow

Pentair (formerly American Products) American Valves 50123100 Spider gasket for 2 in

GLB Calcium Hardness Up, 15 lb | 71251A Zinc Anodes 000 gallons per month toUse calcium hardness up to increase water hardness levels, help prevent equipment and surface corrosion as well as minimize foaming. Features and Benefits: Calcium hardness levels should be maintained at 150 250 ppm One pound increases calcium hardness 10 ppm in 10,000 gallons of water Compatible with chlorine, bromine, mineral purification systems, salt water chlorine and ozone sanitizing systems