I test my TA with a Taylor 2006 kit, and it was 160 on Apr 22nd, so I lowered my PH, and run the pume with the nozzles as far up as possible. It is not doing as much airation as I would like, but I thought it would over time, running the pume 24/7. Yesterday I tested with these results:
FC 9.5
CC 0
PH 7.2
TA 110
CA 260
CYA abt 25

I have been adding Triclor to keep FC at about 19, and boost the CYA just a bit to get to abt 30.

Pool is Plaster.

My question is this... My TA tests say 110. I took some water to a new Hardware store with a computerized testing setup, just to see how we compare. Their results are:

FC 9.6
TC 9.6
CC .0
PH 7.4
CA 160
Alk w/ stabilized correction: 0
CYA 25

Why do they show 0 fro Alk, and I show 110?? She run the test 2 times??

I also came home and run a alk test with a different test kit (bought at walmart last yr), and still got about 110.

Thanks

Les