Charles wrote in message . ..
On 30 Mar 2004 20:36:49 -0800, (NewbieBill) wrote:

It appears to be bass ackwards. As far as I can tell from my narrow
range on the scale it was once again 8.8+ at 10 am and 7.8/8 at 3 pm.
Would water hardness (which I can't currently measure) make any sense
of this. I would guess our water is a little hard, but not sure.

What time of day are you measuring pH?

Diana Walstad reports of a sof****er lake that changed from 5.7 in the
morning to 9.6 at noon. I
this is due to the plants drawing out the CO2 from the water.