"Steve Firth" wrote in message
...
EricP wrote:

The permanent magnet or the electronic ones.
For the 15mm mains water inlet

Do they really work and which is best, magnet or plugged in one?
They all seem to cost a bomb but I have heard some good stories from
users both domestic and semi industrial. I thought they were a joke.

It doesn't matter which sort you buy, they will all work well at
inhibiting scales from growing on your skin.

Have you any experience of this?