S StephanienCarl New member May 20, 2016 4 Albany. NY Oct 8, 2016 #1 Hi everyone. I have a question about closing my pool. My Chlorine is high. 10+ range The PH is extremely low (6.4-ppm) and the alkalinity is pretty much non existent. The CYA i around 100 ppm Can I still close the pool and not have to adjust????