When cleaning your filter you might consider these next steps:
- Remove the filter media. Clean out both the filter itself and the separate media (if there is one). Clean the media until the water runs through clearly.
- Change out any media pieces that are damaged or misplaced.
- Move water through the inlets and outlets of the filter to be sure they’re performing effectively. Use a scrub or strong stream of water to get rid of any algae or other detritus that may be clogging the openings.
- Put the filter back together and put it back in your pond. Observe it to make sure your pond water is moving through it and that it is operating effectively. Use a water quality test kit a few days after you’ve set back the filter to make sure it is safeguarding high water quality.