I did a quick search and didn't find an answer to this.
I've been away for 3-4 weeks and letting the SWG take care of the pool and it looks great. Before I left I added borates and overshot a bit. The strips indicate 80ppm. I had no trouble other than that and the pool looks and feels great. I guessed at the run time for the SWG after a couple days of testing and got it close. After so long FC was 12 but at least not 30... I'm letting it drift down now and will make an adjustment to get it in range.
When I ran a full set of tests I found that my CH was down from 230 to 200. I'd say water loss was the problem, but my Cya is right at 60 as before I left. I plan on raising it to 260-280 to get in to the suggested range using TFP numbers in poolmath.
I don't think this is a problem, but inquiring minds would like to know...
Current numbers are:
I know my salt is high but I can live with that, and I'm keeping the Cya on the low side to allow me to SLAM easier if I need to because I travel so much. Extra run time is affordable in TN.