I recently became a supporter and ordered a TF100 test kit. I have checked my water several times and the alkalinity has always read 50% high. I would read 180 and it was 120 according to my local company that re-applied my new marcite coating. They would read it with their Taylor at 120. I had read my neighbors before around 300, and they read it at 200, and of course we added acid for the amount of 200 to bring down to 120 for my pool. And then verified the change the next day. I have had 4 different occasions of almost exactly the same percentage off.
Could I be doing something wrong to get these results?
Thanks in advance for your advice,