sorry for any possible tech ingnorance but will a brita filter do? i probably should look into it, i have 2 ct both in their own 3.4g KK. the older one already had some curling. i do use IAL on them, 800ml ial water for the 3.4g kkI know that some chain stores have water softeners. (mine dose) you can make a home made water filter to soften your water if you realy wanted to.