I have been embroiled in a week long battle to lower my TA. I am now down to 130 from 300+ following the acid+aeration+repeat procedure. I am shooting for a TA of around 100 for my fiberglass pool.
Now that I am approaching that mark, I am wondering when to start adding borax. I know borates are optional but I prefer them and already have a bunch on hand, so I would like to start adding. I can use the pool calc to estimate the effects on pH of adding borates but is this a good strategy?
It seems that I am going to need acid to offset the pH jumps and acid will also continue to decrease my TA, so I'm thinking that I start adding borates now while i am subsequently engaged in the TA lowering excursion. Good idea?
My current numbers:
pH 7.2 (currently aerating to increase following addition of acid)