OH, that is good to know there are tricks to help with hard water. Tell me more please about using borax, if you don't mind. I have been using water that goes through our reverse osmosis filter, but that will soon be needing a change, and maybe I should learn other ways. Thanks!Could you please add borax to the additive list? I'd like to know the % amount. We have extremely hard iron water and this ingredient has helped in the past. Thanks