You know, that gets me to thinking: Why have a sacrificial anode when they could just throw a 3V power supply in there and have it last forever?
It's always got power, it's attached to the house...
It's always got power, it's attached to the house...
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It's the same mechanism, you're basically leapfrogging the galvanic series by putting something with a better potential for ions to chip away at instead of your iron. With a sacrificial anode you're basically making a battery, but you could just as easily use a power supply and do the same thing.
Both forms of corrosion protection do behave differently depending on water type including water hardness.
Both forms of corrosion protection do behave differently depending on water type including water hardness.