On Wed, 01 Jun 2005 20:10:44 -0700, ~ janj JJsPond.us
wrote:

My normal pH readings
are 7.8 to 8.2 and KH drops after a rain, sometimes as low as one
degree, (1 degree = 17.9 ppm.) but the pH never goes below 7.0

What time of day did you get this reading? Early morning, right before
dawn gives the lowest reading. ~ jan

I don't recall the time of day, just that it was after heavy rain and
rain has become acid here. Most days early pH readings are 7.6 to
7.8 and I call them 7.8 because that is where it is going even if it
is 7.6. I think limestone is slow, but so far it has been very
reliable.

Regards,

Hal