I was having problems keeping the tc/fc in my pool I added 4 lbs grainular shock, checked the level after 5 hours it was barely noticeable. I read further in the post and added 360 liters of bleach and waited over night and fc/tc level is still over 5ppm. Can someone please tell me how to use the bbb cl chart for dosing. And should I leave tablets floting in the pool while using bleach from now on..