I moved into a new house this past winter and gained a pool with it. At the time it was a swamp with several inches of leaves and dirt in the bottom, 11 bull frogs, and countless earthworms. A long process and many gallons of chlorine later I have gotten the water from green to blue but there is a significant haze still present. My pump has been running nearly nonstop for two months at this time filtering constantly. I have removed everything the sand filter is capable of filtering and have used ten pounds of DE to boost filtering power and that has reached a limit as well. I ordered some 1 micron bags from Dudadiesel and triple filtered several gallons of pool water into a glass container and the haze remains. At this point I have nearly eliminate all the possibilities in the geology (dust and dirt) and biology (pollen, dead algae, living algae ) realms. It almost has to be some kind of chemistry issue, I have no idea what the previous owners may have poured into it other than there were bottles of CYA, dry acid, and calcium additives. It is a vinyl liner so the calcium is kind of pointless but my calcium numbers are just fine as is the TA. My FC is rock solid over night with no detectable CCs. I stopped maintaining shock levels weeks ago and have monitored daily since.
My question is what could possibly be clouding the water that is smaller than 1 micron?