20k gal in-ground pool, uncovered/no lanai in FL surrounded by oak and magnolia trees. Only problem is that the drain valve on the filter wouldnt stay in when running the pump so i had to use pvc cement to keep in place. Which means i cant drain the main filter tank from the bottom when cleaning the filter. My go-around is just filling the tank w a hose and splashing the big debris/pollen out. Water has been crystal clear and its working well in my 20,000gal in-ground pool!