I haven’t tested complete set of tests for a month. Today I tested and CYA was down from 80 to 50. Had more rain than usual and drained a few times, maybe 2” in total. Weather has been cloudy, rainy, minimal exposer to sun for last month. Fc has been holding very well. My question is this, since this is mid sept. and 3 weeks until closing. Should I bring CYA to the recommended 80 or let it go until spring and raise at opening? I lost some CYA over last winter.