So I tested my water today, 24hrs after adding more CYA in my pool. CYA is now 80. I tested my FC today, too. Instead of losing 0.5 or 1 PPM like I have been with my current settings (50% for 8hrs), my FC actually rose 0.5, to 5.0. And today was a full-sun kind of day, too!

I may tamp down my SWCG to 40% tomorrow and see what happens. I want to stay near the 4 PPM range.

I get my water tested by the two pool companies tomorrow, too. I can't wait to compare my results again with what their test results say! After tomorrow, I may just release the one company that uses test strips from doing my pool water analysis -- I think their test results are way screwy, especially with my TA and FC levels. Pinch-a-Penny's drop-based testing more closely aligns with my own testing, though last week they came up with a much lower FC level than what I came up with using the K-2006.