This is my 3rd year with the intex SWG. I haven't had any issues. This year, I'm getting the low salt error, which I've had before and has been fixed by adding salt. This time, adding salt doesn't seem to be making a difference. I checked the plates and they look brand new. No buildup. I tested the salt with a salt strip, and it's at 5, or 1690 ppm. It seems high as I can taste the salt more than I usually can. Any suggestions?