"James Ervin" wrote in message
...
On 20 Apr 2003 13:35:27 -0700,

CaCl2 is sold as pool hardness increaser. I got a 7 kg tub for 6$.

Thanks for the info. Is this the same stuff sold as snow melt?

I'd recommend dolomite, which can be bought at any garden shop. MgCa(CO3)2
it doesn't add a lot of sulfate or Cl to the system, targets just what you
need. Unless finely powdered it won't bring up the gH really fast, but it
will work.

Long term it should also help the kH too. Baking soda is the best bet for a
quick fix for KH

Bob