We just had our pool built last fall and used it for just two months. The builder opened it for us a week ago and shocked it. The FC is 14ppm and CC 0. My kids have been bugging me to go in even though it has been pretty cool here in Indianapolis.
I have searched the internet and this forum but have been unable to find an answer to my question about when is FC low enough for us to swim. It has been cool here and we have been away during the day so I have not had much chance to leave the pool open to release more chlorine.
Thanks for all the information here. I plan on using the chlorine pucks the pool builder has given to me until I don't want my CYA to go up any further and then switching to bleach--CYA is at 30 right now. I also started adding acid last year because my TA was well over 200. It is now down to 180 and I'll keep working on that. I have not even tested PH yet because FC is so high. I have a vinyl liner pool.