I want to shock my pool because, yesterday, the TC was at zero after a huge storm and two days away from home. I added chlorine (bleach) last evening, and this morning here are my quick numbers:
Tha chlorine/CYA chart gives me a shock FC between 16 and 20.
The Pool Calculator tells me how much bleach to add to reach FC 16 to 20.
So, I pour that much bleach in, all at once? And then when do I measure FC again? And how do I measure up to 20?
And, do you think I need to shock?
Thanks for your help.