Corrosion is the result of electrochemical activity or what is referred to as galvanic action. Scientific studies have proven that metals having a higher electrical potential will corrode and degrade in a typical corrosion cell, while protecting other metals having a lower electrical potential. Of all typical anode metals, Zinc has the highest electrical potential, which means that it provides maximum protection. Protect your investment by installing low-cost MARS Zinc Anodes. The common sense approach to corrosion control! Extends sevice life of valuable under ground equipment Inexpensive solution to combat corrosion.