OK. First off........ the avatar pic....... *slow clap increasing in intensity* Bravo.

It's really not possible. So. Your new bleach may be stronger than the old bleach. Or your gallons changed in pool math and you are dosing for a 'bigger pool', which would get you more FC from the add. Click on the wagon wheel / settings in pool math and make sure it's set up for you.Today though a couple times after I slammed to 12 because the level had been 10, 2 hours later the next level read 14. How is that possible?
So you're good and close. Finish it through or you'll be back at square one before long. Once it's holding the FC pretty well it is MUCH easier to keep at than it was in the beginning. Ride it for another week if need be. Keep up with the brushing and filter checks.So I’ve been slamming for about a week and a half, FC levels finally are in the double digits pretty much all day long, but I’m still losing about three overnight but the pool is crystal clear