Just received my TF-100 in the mail yesterday and tested it out today. My numbers are as follows:
I'm not sure if I'm doing the CYA test correctly. They say add the solution until you can no longer see the black dot at the bottom of the tube. What I "see" is the water getting gray the more solution I add. The number I posted is when I THINK it disappeared from view. Anyone have any tips on what exactly I should be looking for, or how best to conduct the test that maybe the directions don't include? I will be adding some salt tomorrow, as well as some acid. If I read the pool school correctly, I should drop the pH to 7 or so, and then turn on the falls to aerate the pH back up, and lowering the TA.
As a side note, I have seen first hand how my test differs drastically from the nearby pool supply store. There test indicates my Ch to be at 180. They first recommended raising that until they asked me how old my pool was. When I told them 6 months, they said that I didn't need to do that b/c it was still curing. Didn't make sense to me...