I'd like to add a question to this thread. I also have very high PH and over the last 30 hours have put in a total of 1 gal muriatic acid. I have a 14,500 gal pool. So far, the PH has not come down and my TA is also very high -320

I think I should have dumped in a half gallon of acid to start with, but now that I've put a gallon in since noon yesterday, do I wait or should I still go dump another 1/2 gallon in?

I'm maintaining my chlorine at about 10-12ppm - I need a kit that is accurate over 5ppm. Can someone tell me exactly which of Ben's kits to buy? It looks to me on the site that the main one is no longer available?

Thanks!