I just drained about 50% of my pool and am refilling. The fill water has CH of 120 which is much lower than my water, but the TA is high at 210. The ph is also high 7.8, but the water is cold so it is not really too high. The process of filling introduces some aeration as the hose water splashes into the pool. I can also turn on spa fill mode and get a nice waterfall going. Should I add acid during the refill to help lower TA or wait until the pool is filled and do it all then?