The pool water is extremely clear. What about my grandkids who are 2 and 3 years old? Is it safe for them?You are safe to swim with FC between minimum FC and SLAM level for your CYA. Your CYA is 70, so if FC is > 5 and less than 28, AND you can see the bottom at the deepest part of the pool, you are safe to swim.
Don't fret, swim.