I've been able to keep my pool free of "pool store" chemicals for quite some time but now I'm kind of stumped.
While my pH is fine (7.6) my total alkalinity has kept rising until it's 175. The pool store says to add Muriatic acid, which I will do if there's no other advice here but I want to make sure this is the way to go (I'm not crazy about the dangers of this stuff but if it's the only alternative then I'll do it).
My other problem is calcium hardness and it's a two-edge sword because our city water is naturally hard so replacing pool water with it won't do me any good (I just got through replacing about 1/3 of my pool water to deal with other issues -- which it did but didn't affect this at all). I guess I'll have to live with it (it's about 475).