I left my cover off all day today and burned off 8ppm of FC. Is this normal for a CYA of 70 with 103 degree weather? Also FC dropped from 8 to 0. If I add enough chlorine to get it back to 8, is it safe to swim, or do I have to shock it? CC was maybe .5 (very slightly pink) clear with one drop of R-0871.
Also, pool is not 17K, more like 13K gallons. I will fix my sig when I do some better measurements.