sb2323 said: It had been showing salt at 3000 ppm
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Seems most SWG digital salt readings tend to bounce around a bit...but not from 3000ppm down to where your low readings were. Take a water sample to a reputable pool store and have it tested. I'll bet your readings will be way high because of the added salt you put in the pool. I have been told that the only way salt levels will go down in a pool is by dilution. That could happen by getting a lot of rain water in the pool.....or by adding fresh water to your pool with a hose. Other than that the salt levels will stay the same.