Well, for nearly 20 years I have been chasing high ph and high TA levels. Today I decided to test the tap water and found the following: ph = 8.0+ and TA = 250. Why did I wait 20 years to do this test. Now when I do my daily tests I understand why the ph and TA creep up. I guess I will start keeping the ph at the low end of recommended levels instead of at the mid-range.