Opaque Pool (milky white). High CYA. Help!!!

Hi there! A friend turned me onto this site and I need help more than ever. Went on vacation for 9 days and the pool looked great before I left. Came back and the water was cloudy and sorta green. I took a water sample to my local pool store with the following numbers. The analysis was done mechanically fyi

total alkalinity: 43
ph: 7.1
free chlorine: 2.3
total chlorine: 2.8
hardness: 288
CYA: 156

I was told to first adjust the alkalinity, then the ph, then shock the pool. I have done all...

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