I am having issues with my electric heating elements rusting in my keggles. I have tried the sacrificial magnesium anode and still have rust and the anode appears to have significant corrosion as well. I know my water is really hard would any type of filter help remove some of the minerals that are causing this? I'm not really sure if this is the right forum for this but I know a lot of you guys are knowledgeable about water etc.