Does having an ozonator and circ pump, running continually, affect PH? I'm having a hard time bringing down my PH and TA; PH=8.0 TA=200. It seems like the constant aeration would keep the PH high. This is in a hot tub, 330 gals., 99 degrees. I added what the pool calculator suggested and it didn't have any noticeable effect; am I just being a chicken not wanting to dump copious quantities of muriatic acid in my tub?