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The voltage is still reading 24.02 with 9.89 amps. I've had the water tested twice by professional pool service companies and the actual salt ppm is 3700. I have reversed the polarity several times and I am still getting ppm readings that will vary between 4800 and 5200.

I had a pool service company come out and test. I don't know what test kit they used.

Already did that. In fact I have done this several time. No change.

I have a Hayward Pro Logic salt system that is running the GLX-PCB-PRO main board. About 2 months ago, I started to get low, then very low salt readings (2000 ppm then down to 1900 ppm). Naturally I added salt only to see the ppm go up slightly to 2100 ppm. I added one more 40 bag and when there...