Pretty new pool owner here. I recently had to SLAM my pool to address a green algae issue. Because my CYA was/is so high (150 ppm), I had to bring my FC to about 60 ppm to kill the algae. That was about a week ago. Currently my FC is about 38 ppm (CYA about 140 ppm) and I can’t get a straight answer anywhere on whether it is safe to swim in. The CYA/FC chart doesn’t provide for my CYA level, but by extrapolation I am guessing I should be in the 18 ppm range before it is safe to swim. Am I on the right track or overly concerned and the high FC is fine for swimming because of my correspondingly high CYA? Thank you.