And see if you can describe the cloudiness: White, green, brown, gray. They can all mean different things.

Since you have the PS233 (a GREAT kit) there's no reason to use pool store testing--your tests are more accurate.
(for example, my Sunday tests--20k, vinyl, 79 deg water:
FC:1.5,CC:0,TC:1.5,pH:7.6,TA:90,Ca:70,CYA=30--FC should be 3 minimum, raised FC routinely. I trust my tests.)

You may have algae, you may have dead algae, you may have other particulates.

Check your filter--is cloudy water coming OUT of it? (easy to see when you backwash) If so, you need to increase the filtering or fix something wrong in the filter. You can also try skimmer socks (they are really inexpensive and work nicely) to start filtering right there. I caught TONS of pollen in mine. If you have a sand filter you can add a cup of DE through the skimmer--that increases filtering--DE is cheap, too. There's also something call a "slimebag" that catches stuff, I believe, at the return. It's pricey, but people swear by it. The filter bags on Dolphins and AquaBots are also very fine filters--so a robotic cleaner can filter your pool nicely.

All possibilities. I generally use the skimmer sock and the DE in my sand filter routinely and I am happy with both.