Low salt/ check cell message

I lost chroring in the pool so i test my water in a professional place. The told me 1 bag of salt, a have a 15,000 gallons pool. After one week adding  the salt i just notice when i was cleaning the filter that now is cero chrorine and it have a message of low salt/check cell. I clean the cell even though looks clean. I add 2 bags of salt , but after an hour still show low salt/ check cell and my main concern the GENERAting is OFF. Did i need to wait more time or they is something off . By the way i lost power twice this week do to very big storms in Miami. Thanks

Thank you for contacting Inyo. What is the make and model of the salt system? How old is the salt cell?

3 years exactly! Here the pic ! Blue essence ! T3 i guess

The Blue Essence is the same system as the Aquarite. The cells, on average, last about 3 years. You can try recalibrating the salt level. If that doesn’t work, the cell may need to be replaced.