My history of measurements is in my TFP profile. Suddenly after several days of rain, my CSI is down to -0.52 and I need guidance on which factor to correct first. I have had to drain about 1.5 inches of water out of the pool, and add 10 lbs of salt. None of the numbers look unusual except for their cumulative effect in the CSI. The only number outside the TFP guide is CH and I have been advised here not to try to bring that up right away but maybe now is the time.