Just had new liner installed and refilled pool 13500 gals. switched to SWG in the process. Have not started the SWG because I cannot get my PH and TA in range. TA 195-200 PH 8.2-8.4. I have added one gallon of Muriatic acid 31.45%. in the last four days with no change had a few dips but always comes back up. I know this question has been asked a thousand times and I feel like I am doing what I need to do. Any help is appreciated. BTW salt level is 3500.