Welcome to the forum, PBLsQuad450.

AT a CYA of 30, I would swim in it as long as it was below 10 ppm or so, although I'd probably wear an old suit just in case of fading. I intentionally run my CYA high (80-90) because my pool is an odd situation, and in that case I have no problem getting in it at 10-12 ppm. Just depends on your CYA level.

Janet