I have been working on an algae, cya problem for 2 weeks. I had a party Labor and all the "experts" who think they know everything said add muratic acid to the skimmer. Another said add soda ash. I know all theses things are relevant to a specific problem and will cause a different problem if it is not there now.
We have added bleach and bleach and bleach. Ph is about 7.2, ta is 110, cya is 60, chlorine right now is pegged on the kit I have. I have ordered a more specific kit for higher chlorine levels but it's not here yet.
What is muratic acid actually used for? My pool surface already needs resurfacing so will it hurt it?