Caecilius wrote:
On Thu, 17 Mar 2011 11:19:00 -0000, "GB"
wrote:
I need a very small water softener to produce a few litres of soft water
a day

Would one of those Brita water filtering jugs work? They may soften the
water as well as filtering it, because they claim to "reduce limescale".

We use one with our kettle for exactly this reason: we have very hard
water and the kettle scales up quickly if we don't filter the water first.