You've read my thoughts, Luke. I was shopping around for a replacement
unit, and so far I've got two candidates:

- MiniC scale inhibitor from airandwatercentre.com, for only 23.00+VAT

- Combimatedual-fit from RS, for 127.50

Both use siliphos crystals, and both are DIY install. But the price, as
you can see, is very different.

Its only two of us living in a cottage, so hot water usage is low. Any
thoughts on which one to choose?

-aniseed