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    Penn-Plax Cascade 700 Losing Suction every 2 weeks

    Nothing has changed. Power is continuous. Water level always maintained above horizontal outlet pipe. Threaded connections as tight as can make them. Yet it must be bleeding in the tiniest amount of air, perhaps through the two threaded fittings on inlet side? So that over time, enough...
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    Penn-Plax Cascade 700 Losing Suction every 2 weeks

    I've learned how to quickly prime and re-establish suction. All connections seem as tight as can be. With unit off, and lines closed, I remove the inlet line and then with line open, force feed with hose the line backwards and then immediately close the line. Then reconnect, open inlet and...
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