As for the fading bathing suits, since the disinfecting chlorine level is the same in a high CYA high FC pool as in a low CYA low FC pool (using Ben's chart), the rate of fading or destruction of elastic rubber in swimsuits should be the same while in the pool. The problem is when one gets out of the pool, then the total chlorine "reserve" available (which is the FC independent of CYA) can over time be more harmful for swimsuits. A quick rinse in a fresh water shower or soaking the swimsuits in fresh water should help.

My wife's experiences with her swimsuits getting ruined after each and every winter of use in a commercial indoor pool with no CYA and typical 2-3 ppm FC (I finally measured this) while having absolutely no problems when using our own pool during the summer with 20-30 ppm CYA and 3 ppm FC tells me that the higher CYA and FC combination will probably not result in any noticeable difference in swimsuit degradation.

Richard