Is it OK for CC to go to 1 while a group is swimming? I checked earlier today and got 0 CC. It is now at around 1. Is the increase due to bodies, sunscreen, etc. in the water?
Yes, As long as you have adequate FC available. Not a bad idea to elevate the FC with a few ppm of FC shortly after the swim and you will likely get rid of the 1.0 cc and not really be required to shock the pool.
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