high alkalinity

[chem geek]

The water is probably cloudy because you have no chlorine (that's what you reported) and an algae bloom is starting. You won't be able to conquer this with your SWG or ionizer alone. You will need to add more chlorine manually and how much depends on your CYA level (which you did not report). You should add unscented bleach or chlorinating liquid to get up to a Free Chlorine (FC) level that is 40% of your CYA level. With a really high CYA level, perhaps you can get away with less FC, but it will take longer to clear the algae. At least 20% of the CYA level will be needed, but more is better (up to 40%).

After the algae is clear, you need to figure out how you got into this situation in the first place. It sounds like your SWG system isn't working properly. Is your salt level too low? SWG systems will shut down if the salt level is out of range (usually too low).

Richard