25k gal plaster pool nitrates: 50 FC: 0.47 TC:2.15 CC:1.68 PH:7.8 H:223 TA:82 CYA 27 TDS:590 add at night 7.5lb super pool treat (Sod Dichlor) next day test, FC: 0.7 TC:2.85 CC: 2.15 ph 7.4 H:230 TA: 46 CYA: 40 TDS:600 that night added 5 gal liquid shock (12.5% sod hypochlor) and alb baking soda ,next day test, FC:0.9 TC:5.06 CC:4.17 PH 7.4 H:243 TA 58 CYA: 41TDS 630 Am I fighting a losing battle by shocking nightly to get FC up and CC to peak and reverse? or just replace water? Thanks