i checked FC 6.5 ppm today but i had 1ppm of CC. is this still ok or do i need to shock? Cya-45 ppm, PH-7.4-7.6 , TA-100. i have already shocked the pool just in case because this is the first time i've seen CC. am i over reacting? is this something to be concerned about? the water is crystal clear and before i added 1.75 gal of 6% bleach i checked the FC level and it was 6.5 ppm. i will check it again in the morning.