I'm curious what levels of Cl are still safe for both swimming and for swimsuits when using the recommended Cl levels given on the TFP CYA/Chlorine charts. In order to make things a bit easier and not have to add Cl nearly every day, I'd like to raise the FC levels above the "target" levels, and perhaps even above the "Yel/Mstrd Min" listed in the chart that has this column, but I'm a bit unclear at what point the Cl level starts to cause problems for the fabric in swimsuits.
For example, for a CYA of 60, the chart lists a "minimum" C level of 4.4, a "target" of 6.8, and a "Yel/Mstrd Min" of 9.0. I find that my pool can start to get a bit of algae in the shady areas if I let it go all the way down to the "min" level, so in this situation I'd like to use a minimum of about 6. When I add Cl at this point, how high can I put it before it starts becoming a problem? In my 22K gallon pool, a gallon of 12.5% liquid Chlorine gives me about a 6.5ppm rise in Cl. This, however, would put me to 12.5ppm. This is still well below the shock level of 23.7, and I'd think it would still be fine on skin, but would it still be okay for swimsuits, including elastic and more delicate materials? If I instead add a half gallon of 12.5% liquid Cl, that would put me a bit above 9, which is essentially at the ""Yel/Mstrd Min," but if I added it a day early, that might give me closer to 10 or 11. Would this still be safe on swimsuits?
Thanks for feedback on this,