So after returning from our camping trip, the FC was 18.0 ppm, pH was 7.0, and CYA was less than 40. I added 1 cup of dichlor Thursday afternoon,just prior to leaving.
Our solar cover has been on continuously. I just took it off,in hopes that the sun will help to lower the FC.
I read about sodium thiosulfate, my children and I want to be able to swim today. What can I do so we can swim safely?

I did add 1 cup of borax last night to raise the pH level.