Realized today that my CYA level was 0. Shocked pool last night because of light brown patches along bottom of pool and floating in pool. Used 3 bottles of bleach and this morning pool was pretty clear. Added 6 lbs of Stabilizer and waited 2 hours. Levels are currently :
I am not sure if I can test CYA level since I only added it 2 hours ago. Is it safe to swim in a pool with such a high FC level?