Hi Rob;

I think you've been lucky, before, and now you're not. So, it's time to actually have a plan.

For starters, you can't measure chloride (salt) with a 3-way; you can measure chlorine (not chloride), pH and alkalinity. AND, using a pH probe could be a BIG part of your problem -- because I'm guessing you do not have the pH probe calibration solutions. That means, that your probe could now be reading ANYTHING, except the correct value.

Read through the Intex recipe sticky in this section; learn to do your pool withOUT the SWCG, and then turn the SWCG on, and see if it works.

But . . . first you have to get a test kit. Go get a cheap OTO/phenol red test kit, and find our what your pH and chlorine levels are. Turn your SWCG OFF.

Meanwhile, for a 5,000 gallon pool, add 1 gallon of PLAIN 6% bleach each evening. Test with OTO before each addition; if the result is dark yellow, or orange, skip that addition.