I've used HTH algaecide - do I need to drain my pool?

[Whattf]

1. Add 1 gallon of bleach EVERY night, for now. Skip if the PM chlorine result is dark yellow (OTO) or more than 3 ppm (DPD-FAS).

2. If you have access to Sams Club, purchase (2) 24# paks of bagged dichlor. This will add BOTH chlorine and CYA, but since it's bagged, what you don't use this year, will last till next year without getting all stinky.

3. pH => OK; TA => possibly low, but don't fix it yet. CYA => low. Calcium => needs to be tested. Since you have a concrete pools, you DO need to worry about "water balance" or "saturation index", which is a composite calculation involving pH + temp + TA + CH. If you have heater, it needs to be managed even more carefully.

I understand you want me to use dichlor to increase both CYA and Chlorine in my pool. However, I don't have a Sam's club membership. Is there an alternative you can recommend?