My pool CYA is at least 150 I used the strips AND my Taylor kit I bought per this forums suggestion. I’d suggest the reading is 150 from the Taylor cya test method… I’m not interested in figuring out how to drain water. Can I simply let the pool water sit for a week without adding chemicals to dissolve the cya levels down to an OK level? I put my hose in today while the pump was off for 3 hours and it just filled the pool really high. 
