Thanks again, Carl:

You're completely right. I was very unclear about what pucks I was using. Initially, I used Cal-Hypo pucks to raise Cal, but they did a crummy job of putting actual chlorine into the water. (It was a Walmart brand, not a pool store ignoramus. Just my own innate ignoramus tendency.) Once Cal was back on track, I switched to trichlor pucks. Net result, I fixed my Cal problem but am now overstabilized -- reaping what I sowed.

Best and HNY,
Paul

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We may not pay Satan reverence, for that would be indiscreet, but we can at least respect his talents.
Mark Twain