Over the past 5 days, the salt level in my pool has been increasing without the addition of any salt to the pool. Five days ago the salt level was 3400, and today it is 4100. I have confirmed the salt reading that the SWCG is giving by manually testing the water with salt strips. Today, the reading from 2 test strips was between 3900-4000...close enough to the SWCG reading I think.
We had major flooding 3 weeks ago. The pool actually overflowed (even with 2 overflow drain pipes) and we got a lot of dirt in the pool. We vacuumed to waste to get the dirt out, I cleaned the filter cartridges and cleaned the contacts in the ORP and pH sensors. All of the pool chemistry was out of whack from the flooding. Two weeks ago, I added salt, baking soda, and calcium chloride to get the levels back to normal. I added some stabilizer last week to raise the CYA. The weather for the past 5 days has been cloudy with just a little bit of rain.
Given that I added salt 2 weeks ago, I find it hard to believe that it has taken this long for the salt level to rise. But, maybe?
Given the recent cloudy weather, we haven't had major evaporation to raise the salt concentration. And, we have an auto-fill which would tend to lower the salt concentration.
Since the only recent addition to the pool has been stabilizer, is there anything in stabilizer that would cause an increase in the measured salt level?