Quote Originally Posted by CarlD View Post
Tamminen gives the typical garbage the pool industry gives you. They love the "slug of Muriatic Acid" approach and give you a MacBeth Witches' explanation for why it works. If it does, it's incidental.
Tamminen doesn't actually advocate the 'slug method' in his book. He just gives some treatment tables that show how much muriactic acid or dry acid is needed to lower a certain amount of TA in a given volume of water and doesn't really say much more on the subject. All references he makes about adding acid always say to add it in small amounts so as not to make too great a pH change at once and to 'walk' the acid around the pool or pour it slowly into the return stream with the pump running so it gets diluted quickly and to never pour it near drains, skimmers,and other suction inlets. Basically the same advice that has been given on this board time and again. His advice might not be complete (his whole chapter on water chemistrt is VERY basic) but it is generally sound.