I tried searching for the answer before posting this but couldn't find the exact answer. This is my first year using the BBB method (actually started after opening pool). I've noticed my TA keeps creeping up this year. It may have in previous 2 years of owning the pool but I didn't have a good test kit until purchasing the TF-100 kit earlier in the season. I recently drained about 1/3 of my pool to combat high CYA (65+). My CYA is now around 45. When I refilled and tested about 2 weeks ago my TA was at 120. After 2 weeks it is at 140. When looking at posts regarding lowering the TA, I see that you need to lower the pH then aerate to lower the TA. Is it possible my TA is rising because I keep my solar cover on when we are not using the pool, which is more often than not with Chicago's crazy weather this year? Does a pool need to "breathe"? Should I take the cover off for any period of time after not using the pool for a few days? I'm curious what the correlation is between keeping a solar cover on for extended periods of time and TA readings. Thanks.