Discovered this evening that our Free chlorine was 18.8/21.5 (TWO RUNS) based on my taylor testing kit. Last testing was 1.5 weeks ago and it was wnl at 2ppm. My salt generator has been at 65% since opening (3 weeks ago) and had been just fine until 1 week ago. Weather has been warm and solar cover is on when pool is not in use which is 10hrs of 12 hours run time during the week and 5hrs of 12 on saturday and sunday. Is it possible the sun just isn't burning off the chlorine and my swg is set to high? The only other factor is I added 2 bags of fresh'n clear(chlorine free) from my pool store at their suggestion to maintain clarity...they suggested weekly. This was added last monday. I know I can add a neutralizer to lower the FC but wanted to try non-pool store attempts first. I lowered the swg to 30% this evening and left solar cover off. Will this work and how long to lower FC <10ppm. Should I try turning SWG off entirely for a time period?
This evenings readings: