Hi, Brad,

Given your indistinct method of measuring Cl and your CYA of 90 (maybe), I submit that the filter is not your issue.

To get that pool to breakpoint chlorination and clear it up, you should be running your Cl up to around 20-22ppm and KEEPING IT THERE until your water clears.

Run your pump 24/7 'til the water clears as well.

Can't answer about the SWG but I'd turn it off....why produce Cl when you've already got it in there?

You simply have not kept your Cl high enough...long enough.

Additionally, it the cheapest, simplest thing to try. We all need to remember what our Dads taught us..........check the easiest things first.