I have a hot water cylinder, the immersion has failed twice already and out of good will they've replaced it. I live in a hard water area total hardness (330ppl) and ultimately the warranty of my cylinder, as well as most manufacturers have terms to the effect of 'must be below 220-270ppl'.
How can I reduce this hardness, without using a salt using water softener?
How can I reduce this hardness, without using a salt using water softener?