seem to be having the same probem I have done all the medal tests and al clear I just can not keep a chlorine count at all in the past week aone I have lowered PH to let chlorine do the work I have added 15lbs of granulated chlorine Omni brand not to mention the other 18 poounds of shock since April then just yesterday added nine more pounds shock still milky white held chlorine level of 9 for about 6 hours then by this morning it is back down to 1 I have put way to much money into this pool I dont know what to do now?
i have a 30 round above ground 4 feet deep so they figuer 23,900 gal
TDS 500
CYA 60
tot chlorine 0
free chlo 0
ph 7.4
total alk 122
no medal