"Thanks guys (Watermom included )" --- You are welcome!

Since the pool looks clear and you have no measurable CC reading, I'd go ahead and let them swim tomorrow afternoon. If, after a couple of days, you still think you are fighting something, go ahead and try and sustain your shock level for a few days with testing a couple of times a day and each time adding enough bleach to get back to shock level. How does the amount of chlorine being used daily compare to what your pool normally does?