Received new SWG from Intex and now I can't get pool water good enough to swim in. At first the new SWG was reading High Salt so I drained about 2 inches of water and refilled and just as quick as it started looking good it became cloudy again I have added bleach and chlorine to shock and still cloudy. SWG now reads low salt, I am afraid to add more salt. What do I need to do? Summer vacation is half over and haven't been able to swim.