O.K. I had to shock for the first time. I had a very light algae or something.
Once I'm done, how long till the chlorine drops to swimmable levels? I shocked to 24 TC, vinyl 24,000 gallon pool. Temp now about 85, outside temps 100. Lots of direct sun.
Any guesstimates? And what is a safe tc for swimming, 7 I think?