Okay, I shocked with 3 1/2 gallons of walmart bleach. A test an hour later showed TC of 16, but still CC 0.5. I guess I thought that much bleach would kill anything that was lingering. I really expected a CC of 0. I will check in the am to figure out if I had an overnight chlorine loss and if the CC has finally been taken care of!

Tonight I realized that dirt is constantly entering the pool as my husband works on grading the surrounding area in preparation for concrete. Though I vacuum once or twice everyday, I wonder if that is impacting the CC or if it is that darn green ring around the pool.

I also realized that my tiny bottle of reagent isn't going to last long using 32 drops to test every time I shock!