Silly me. I'm usually good at researching problems, but instead I went to my local pool store and listened to them. When I took the cover off, the ph, and alkalinity were both low. No sign of chlorine either, but the pool was clear and free of algae. I put in ph increase yesterday, as well as alkalinity powder. I also added two pounds of shock. The pool is an 18 round. Today, I tested it and the readings were ph 7.8, free chlorine was 0, alkalinity was 120, and ppm stabilizer was 30-50. This was using dip strips. I know some people don't like these test strips but they have never failed me as of yet.

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I have not tried either baking soda or vitamin c. Should the filter be running during this treatment of sparkle conquest?

Thanks!