I just did my OTO test for TA (Total Alkalinity) and I added 3 #3 drops to get it to light yellow. The fourth did nothing more, so I guess the result is 3.
That means 3 x 10ppm = 30ppm according to the chart and instructions.
But does this mean my TA is LOW or HIGH??? I mean, do I have 30ppm and I need ~100ppm, so add 70ppm?!?!? OR does this mean add 30ppm to get to 100?!?!??!
I am thinking it means my TA is only 30, as this is a new pool (3 weeks old) so that does make some sense that is has not built up TA yet.
Here are the other results I got:
Residual Chlorine: 2.25
pH: 7.4, which is basically fine, I might add a dash of borax though
TA: 30ppm I guess
So I figured my TA is just low and I read to fix TA before messing with pH, as it's a waste of time. So I put in 6lbs of Baking Soda (100% sod bica), 3lbs twice 8 hours apart. I tested before the 2nd 3lbs and it had no impact on the OTO test (I probably need a more accurate test).
I will retest later tonight and publish the results but any insight into this is much appreciated.