We're going to have a bunch (read 30+ people) over for a pool party in about 2 weeks (First one! Much excited!).
How early should I bump up my FC? I've read that it would be acceptable to bump it up to just under SLAM level - for us, SLAM is 12, so Aiming for 11?
People will be here for about 4 hrs - should I test during swim time? Can I add chlorine if needed during swim time, and if so, how to safely do so?