Thanks for the info! Good info on the circuit board. My numbers for the pool are very good - I am at work but heres my recollection

TC=FC= 2-3 ppm
CYA = 20 ppm
PH = 7.6
ALK = 140
CA=don't have test kit yet but was "good" according to pool store
No metals detected (I have sequestering agent in the water)

The pool has been stable at these levels for about 1 week. I am using the BBB method (most Bleach & muratic acid so far).

Thanks
John