Magnesium Anode Rod for Stainless Steel Hot Water Heater Tanks Solar

In the case of a water heater application, the sacrificial anode rod is inserted into the tank and the metal it is protecting, the inside of the tank, will not corrode unless the anode rod corrodes away first. Sacrificial anode rods should be checked periodically for excessive corrosion. The time in which it takes for the rod to corrode depends entirely on the quality of the water. Check periodically for corrosion.