Watermom,
“Thank you” for your response with regard to the CC odor, as well as the time frame as to when I should be concerned with the CYA level. The settled debris is too fine to scoop out, maybe spring pollen or just plain old dirt from over the past winter / spring months? Additionally, I’m working on increasing / keeping the FC level much higher (~10) then it has been recently. Missing the chlorine dosage yesterday morning did not help matters!

As of this a.m. our pool looks cleaner, including the deep end, except for the all of the debris settled on the bottom. The water sample had a slight odor / smell, and the early test results are as follows:

Water temp = 74 deg.
FC = 5.0 ppm
CC = 1.5 ppm
pH = 7.2

With the FC dropping over night by 2.5 ppm, and the ratio <5 when compared to CC, I added another 4.34 gal. of chlorine (bleach 6%). My plans today are to re-check the chlorine levels ever 2-3 hrs.

“Thank you” (and everyone) for taking your time to read and to share your experience!
Gene