I took Dave S.'s advice and shocked the pool. I used bleach and the calculator to figure out how much I would need. I put in 10 gal's of 5% bleach. My readings this a.m. are:

FC: 15
CC: 0
TC: 15 (OTO method off the scale)
pH: 7.2
Alk: 90
Cal: 110
Cya: 80
Temp: 82 F

It was great to see the CC shocked to zero. Other than letting my free chlorine drift down to a more normal level, does anyone see anything else wrong?

Tx, Rick