Thank you. Here is the quote from TFPYour cya is 50 - there are no inbetweens u always round up to the next 10.
Normal fc target is 6 to 8 ppm & slam fc is 20ppm
Who suggested not to SLAM Process@ night? I suggested not to fill at night because your liner can shrink & put stress on your pool walls.
Please read the entire thing & follow it exactly. Slam is not a one time addition of liquid chlorine - it is bringing the water to Shock Level And Maintaining it @ that level until u pass all 3 end of slam criteria. The more often u test & bring it back to shock level the faster u will meet all 3 criteria. Here’s a video also
“You cannot do this overnight…it often takes several days to see it completed…no shortcuts.”