I did my first water tests using the TF test kit this morning and have some questions, here are my results, pool is very clear and looks great.
FC - 5.5 (CH drop test)
CC - 0
TC - 5.5
pH - 8.0 (difficult to detect using colors for me)
TA - 270 (did the test twice, 260 the first time, 270 the second)
Salt - 3000ppm on the controller - 2640 Aqua Check Strip (2 tests)
I did not have time to do CYA because I was concerned about the TA test.
So - I take a sample to the local pool place (where I have been getting my water tested).
FC - 2.2
CC - 0
TC - 2.2
pH - 8.7
TA - 146
CYA - 88
Salt - 3000ppm
When I looked at the top of the test print out it states 19,400 gals - pool - printed vinyl. When I use the pool calculator and the water depth measurements I tooI get 17,500 gallons. So there test results are assuming about 2000 more gallons than what I have (I am going to measure exact today the dimensions of my 27ft round pool). The pool place uses a bioguard tester. I would guess that since they are using a larger volume of water it would dilute my results a little if the water volume is some how factored into the calculations. I am going to test again tonight - but if my TA is that high, do I just need to add muriatic acid to get the pH down to about 7.1, and allow it to rise, and do again until I get my TA down? I know a few more times with my test kit I will feel more comfortable, but I am concerned about the differences in TA and hoping water volume is the culprit.