Matt,

There is a greater than 90% chance that chlorine will clear your pool. You simply haven't been using enough of it.

Using bleach, bring your Cl level up to 20 - 22 ppm and KEEP IT THERE until your pool clears. Run your pump 24/7 during this process. There is no need to backwash unless your filter pressure rises more than, say about 5 lbs.

That's it. Don't put anything else in your pool....you're probably wasting your time and your money

There's a few caveats to the above.

1. Your alk is a little high but I don't think high enough to contribute to the cloudy water.

2. You didn't post CH. Test it and if it's below 400, disregard it.

3. Possible copper in the water but I doubt it.

Go to the grocery store and get some bleach.....lots of it.....it may take 24 hours or it may take a few days but it'll work. Run your pump. Your filter is fine as long as it's not spewing sand.

Remember the words I put in caps....KEEP IT THERE.....Test and add back to 20ppm 3-4 times per day if you can.