Everfilt® Sacrificial Anodes are made of high-grade magnesium and placed into the top of the stainless steel filter. The purpose of an anode is to prevent corrosion by sacrificing itself before any damage is done to the tank. The anode being made of magnesium will corrode faster than the tank, adding life to your tank and or system. Protecting your equipment is important. *Recommended change interval when anode is 50% consumed.
Comes in pack of 2ea.