is there a sure way, to have a 100% ^positive answer, the "milky" water I have in my pool is sand returning in pool from my filter ?
I think if it sand indeed, if I stop the pump for a few hours, sand (if tha's the case) should go down on the bottom ???
any other way to check for sure ? the chemical of my water is "perfect" my pool store guy told me, after a test.
I just don't want to change sand in filter, if it's not reel problem !