Cloudy water after mustard algae

[Guest]

Hi, a few days ago I had mustard algae in my pool and I did what my pool store told me (that was to add stop yellow and super shock) well it seems the algae is gone but now my pool is left very cloudy and kind of white, I'm just curious why this is, and also all my readings seem to be good but my ph is about 8.2, any tips would be appreciated. Thank you.