"Cheryl Rogers" wrote in message
...
Are you adding any chemicals to lower pH? What is the phospate reading on
your tap water?

Cheryl


No, actually using non-phosphate alkaline buffer to keep at 7.0; water tends
to be acidic at about 6.4-6.5 . Forgot to mention that earlier, was actually
coming back to add that info. The phosphate reading out of tap is 0.5ppm.
TIA