Got a HTH 6 way test kit from walmart. pH 8.2, total chlorine 0 (no free chlorine on the test strips), total alk 110. Added 1/2 gallon of liquid chlorine (10% sodium hypochlorite) and 6 ounces of 95% sodium bisulfate. Rechecked in 1 hour. ph 7.8, total chlorine >5 (free chlorine 4 on the test strips, total alk 100. Pool opened on 5/21. Liquid chlorine added on pool opening. Additional liquid chlorine added 5/25 along with 10 pounds of alkalinity rise (sodium hydrogen carbonate). No other chemicals used thusfar.

Now needing to add CYA.

16x32 rectangle with variable depth from 3 feet to 9 feet. Estimated 20,000 gallons.
Jacuzzi Magnum force 1 HP pump, Hayworth sand filter.