Thanks. I am also in Mesa. My salt levels have been declining around 20-40 ppm per day. I also run a water feature and have seen that aeration can deplete salt, but do not know if this is true. I was wondering why my CH struggles to get above 200, when new water flowing in is probably close to 400 ppm. I wondered if the salt was reacting with something the pebbletec or gunite needed since CH was a little low. My salt checker does require calibration. At the height of my leak adventure, I was losing about 1" per day and was losing 100 - 120 ppm per day on salt levels. I will re-try the bucket test.