I've been putting muriactic acid in my pool almost daily to get my TA down, which started with fill water at 370. It's now down to 200. My Ph never seems to go down much with the acid though. I ran out and didn't add any for 2 days, and it went from 7.2 to 7.8. Is it normal for acid to rise so quickly? Might I really need to be adding acid every day, and how safe is that?

Thanks!