It's an innocuous looking pvc pipe in your pool wall somewhere, above the normal waterline but below the coping. Mine is about 3/4", nothing special about it, looks just like the 3/4" PVC fill line too. Mine was blocked as well, I've reamed it out but still don't know how freed up it is, I have yet to find the outfall but my pool doesn't overfill now after it rains.Originally Posted by kevinod77
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