If you get ready to try a clarifier, Natural Chemistry does have one that worked well for me....I've had to use it when I added zeo to my filter and then started up the pump in filter mode instead of backwash, so I sent enough zeo dust into my pool to make it look like a mud pit. Three weeks of filtering didn't help, so as as last resort I tried the clarifier. The one I used was called Clear and Perfect. You add it, run the filter for a few hours, then shut it off. The next day I could see drastic results, and the second morning it was completely cleared up. The thing is, though--that once the stuff settles to the bottom it takes on a strange consistency and needs to be vac'd to waste to remove it from the pool because it's very easily stirred up again.