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In article writes:

There are folks that make electromagentic collars that surround the water
intake pipe and thus make the water softer. This supposedly realigns
something in the minerals' molecular structure which then makes it
impossible for it to stick to anything. As a side benefit this process
claims that it eventually cleans out encrusted water heaters.

Sounds like something that we need for our studio cables. G

The magnetic part rang a bell though. In the manual for my water
heater (it's a Sears, so there's a real manual with a real parts list)
it says: "In some water areas, you may not be able to drain all
sediment deposits by simply draining the tank. In those cases, Mag
Erad (part no. 23600) can be used to help remove the sediment
deposits."

I looked up that part number on the Sears web site, which it
acknowledges as "Mag-Erad" but it say it's unavailable. A Google
search shows it to be a citric acid based cleaner available at
plumbing supply stores. So I wasn't too far off joking about
cleaning the water heater like a coffee pot.

--
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