Cloudy water is it my filter?

[Skymarc]

These numbers are from the pool store lab test, they are good. I take ph and chlorine test only with a small drop tester. I have a k2006 on order.

I only added liquid chlorine 12% (im on my 2nd 55 gals drum), some Borox to push ph up also some copper sulphate 2 weeks ago.

Not sure on the sand filter, I had the same problem 2 years ago, dealer said the sand was too coarse, he sold me a finer sand and its not better. I stop the pump last night and the pool was clearer this morning I was starting to see the bottom. I could see some dust in the bottom so I put in the Dolphin robot and it made it cloudy with the cleaning. I restarted the pump this morning and its cloudy again.

I will get some stabilizer and will try to find some DE sand to do your test.

My sand filter is a 30" size with sand about 10" -12" down from the top, is this too low? Pump is a 1.5 hp Pentair.

I will probably take the sand filter appart to see if I find anything wrong. What do you think of Zeobrite sand media?