Just an update on my pool. The water is slowly clearing. I still can't see the bottom drain but it won't be long before I can. I have tried to seal any leaks but think the pump basket lid o-ring is bad. At some point the pump filtered enough of the fine particles out and the SWG can now run without producing the foam/air bubbles. If I had thought of it earlier I would have ran the recirc and SWG to see if it foamed the same way it did on filter and SWG. I suspect it wouldn't and that the culprit was a chemical or something in the filter media that has since been eliminated. Anyway, the system seems to be working correctly. The water is clearing and swimming is imminent. I appreciate all the advice and encouragement from each of you. This forum is a great help because, as always, I am just a pool dufus .