I wrote last week about maintaining our pool myself with all your help, but hadn't received our test kit yet.
I just received a missing component of the TFTestkit I ordered and promptly tested our pool.
For the past week, I've been adding a gallon of chlorine/ day, but it's obviously not enough.
The calculator says to add 38 oz of muriatic acid. The previous owners left some in our basement, which is now at least 4 years old. There's also some Baquacil (pH decreaser). Are these chemicals still good to use?
Besides the muriatic acid, what else I should do?