I recently switched my spa from chlorine to bromine. Everything seem to be balanced over past 4 weeks but recently have seen a jump in TA. I used pH down and brought the TA down to 85 but then had a low pH level (6.8). Added pH plus to correct the pH level and TA went up again (140). I feel like I am playing a tug-a-war with pH and TA. Oh, and to add to issues my bromine level has dropped and I have been adding bromine consistently. My bather load is just me and about 3x per week. Tub is 375gallons. Any help would be appreciated.