Why is my UltraKlean Pond Filter leaking? April 18, 2026 02:36 Most leaks are caused by:Dirty or misaligned O-ringLoose fittingsImproper lid sealingEnsure O-ring is clean and seated correctly before closing lid Related articles Videos and Troubleshooting My UltraKlean Pond Filter lid clips are damaged or leaking. What should I do? UltraKlean Replacement Parts Why is my UltraKlean Pond Filter backwash valve hard to turn or not working? What should I do if my UltraKlean Pond Filter is not working effectively?