quote] adding tap water with a concetration of 270ppm isn't going to help.[/quote]
Interesting numbers. I measured it only once, and came up with 450 if I remember right. I once added some Ca on the advice of (Guess who?), and it promptly precipitated out. Leaving me with little white thingies (for lack of a better word) all over everything. So I'll just stand by my statement if that is alright by you.
And, no I am not starting another Calgary water argument, nor will I participate in one, so this is it, no more.