I have a 5000 gallon Intex above ground pool. Iam using (new) Aqua Chem salt strips. My reading is a 6.6 on the strip which tells me I have 3070 PPM.My problem is the Intex Krystal Clear saltwater system Model CS8110 keeps faulting that I have high salt. This pool calls for 3000PPM. Any suggestions? I'am using Norton pool salt in which I used three 40# bags. I have soaked the cells in Vinegar for one hour per instructions. The system is one year old.