In 24 hours the chlorine level went from 7 down to 3. I think that maybe another shocking is due. I did go swimming yesterday though and the water is 100% perfect. After many agonizing weeks, my pool is finally "right" and I'm starting to actually like the damned thing again. Overseeding put lots of grass seed into the pool yesterday so I sent Billy (AKA my Aquabot Viva) to clean it all up. Though Billy was pricey....it was nice to hit one button and have him take care of it all for me.