Hi Everyone! We just bought this house with an awesome pool. We've tried calling a few pool cleaning companies, but can't get a call back or have been flaky, so we've decided to tackle it ourselves. Problem is we have extremely high CYA. Using a taylor test kit the previous owners left us, shows the levels around 170. The FC is also at 0, although we added an hth super shock treatment yesterday morning. 3 1 lb bags with CALHYPO at 56.44% We also have a tablet feeder attached to the pump/filter that I restock with tablets every few days. I can't really justify draining the pool while we are in a severe drought. Any ideas or thoughts? Let me know if more info is needed. Thanks!