I have been told several times to "shock" my 28K inground pool even though the Free Chlorine level was good. Usually this was because I had cloudy water or was treating an algae bloom.
Right now I have been battling cloudy water for 1.5 weeks and still have cloudy water even though Chlorine, pH, alkalinity etc. are all in good. I had water checked again yesterday at pool supply store and sure enough was told to "shock". Chlorine level 2ppm now before shocking? I added 32 oz of clarifier yesterday and still have cloudy water.
Any suggestions?