What brand SWG you using I have the Intex 7000 gallon and having the same issue. Intex sending me a replacement to the control unitOK so after about a month with my pool I still can't keep the SWG happy for more than two days..... Done 6-7 partial water changes and everything i do it works for a day or two and then high salt alarm again. Cleaned the plates with vinegar they were crusty but even clean same problem. So I'm mostly just using liquid chlorine. PH is finally stable with TA down to about 110. Best thing is crystal clear water everyday not even a hint of CC the entire time!!!! Loving easy how easy it is.