Have an Aquarite chlorinator. This will be the third summer of use. Have had black algae which is now cleared, but am having trouble getting chlorinator to work. It registers 2000 for salt, but test strip shows 3050. "Low salt" light and continuous "inspect cell" light on . Have some minor dust-like covering on the cell elements, but no placque build-up. Have added 10 pounds of stabilizer before the black algae, now another 5 (29,000 gal pool), but still have almost zero registering stabilizer. Am worried about adding too much stabilizer...can levels be masked by something ? Aquarite problem vs other?

Any suggestions would be great!