i am new to the pool world only have my pool for about 3 months now. it is a sport pool that is 14X28 it goes to 6 foot in the middle. the pool levels are: ph 6.3, TA is around 140 and chlorine 1 or less and free chlorine is 1 or less. i have an auto pilot nan and it has been running at 100% for a day or so. I just checked it and the chlorine levels are not improving. we had a bunch of rain almost all last week and the salt lever drooped to 2100. i added 2 bags of salt and the swg now says it is 3600 ppm. i have added Clorox to boost the fc, and a box of 20 mule borax to raise the ph. the chlorine has not raised and neither has the ph. what am i doing wrong? thanks..