This is my first season with a fiberglass pool (or any pool for that matter), I do not have a SWG but use liquid bleach. My PH tends to stay on the high side, even after I lower it, it creeps up again. My numbers were FC 5, TC 5, PH 7.7, TA 100, CH 250, CYA 40ish. I lower my PH to 7.4-7.5, thus...