Who can tell me …

[DailyMoparGuy]

Ugh. This thread reminds me of work and I’m on vacation ?

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[ShadowsPapa]

Sacrificial anodes DO work. Fire trucks use them. Every truck I've seen has them on every inlet and outlet to protect the pump and associated plumbing. I've also seen the damage that's done when those anodes aren't replaced at regular intervals. Waterways start corroding and then it's big bucks to replace them.

Yes those do work. They need to be replaced in our electric water heater on a regular basis. Fail to do so and it will die earlier.