Hey sonup !!!
quick thought, what does your yard look like ? I ask because pollen season officially started here and while it isn’t heavy enough to blanket everything (cars/decks/driveways) yet, it surely is enough to make the pool loose some of its sparkle. If it isn’t the trees it could also be dust from the farmers plowing their fields in overdrive (if applicable by you).
We trust the testing and if your OCLT passed, then it’s a filtering issue which would be par for the course right now. Unfortunately it takes time and every year my reward for opening early was to end up cloudy for a few weeks anyway. Rest assured yours will be ALOT easier than all those that wait until Labor Day like everybody likes to do by us.
A dirty filter will clean better than a fresh one to a point because all the crud will help trap more crud, but you’ll also be crating a ‘tea’ of sorts with it in the meantime. I’d suggest cleaning the filters once a week and keeping tabs on the testing like you’ve done. (Well done !!).
My property was heavily wooded with oaks and this was what I sucked out each year. It took 5 or so years to just trust my testing and know it was the pollen and not the water.
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