Refresh the water, wash the fountain parts according to the maker's instructions, and replace the filter on the schedule specified for your model. A new filter does not replace cleaning the reservoir or pump. Before buying refills, check the fountain's exact model and the filter's shape and dimensions; capacity alone is not proof of compatibility.
A simple fountain-care routine
- Check the water level and condition each day. Empty and refill with fresh drinking water when it needs changing, and keep a separate clean bowl of water available too.
- Before taking the fountain apart, unplug it. Follow its manual to remove the reservoir, drinking surface, pump cover and filter. Do not immerse electrical parts unless the manufacturer explicitly permits it.
- Wash the water-contact surfaces and accessible pump components as directed by the maker. Pay attention to corners and the pump intake where residue can collect. Rinse thoroughly, reassemble and refill before switching the fountain back on.
- Check the maker's replacement schedule for the filter and any pre-filter sponge. If flow slows, inspect the water level, pump and filter according to the manual rather than assuming a new cartridge alone will fix it.
Cleaning frequency depends on the fountain, the number of pets using it and how quickly residue accumulates. Follow your model's instructions rather than relying on a universal number of days. Keep the ordinary water bowl clean and topped up while the fountain is disconnected.
How to choose a replacement filter
Find the model name or number on your fountain or its manual. Compare it with the replacement listing's stated compatibility, then check the cartridge shape, fitting and any separate foam pieces. Two fountains with the same water capacity may use different filters. If the listing does not identify your model clearly, confirm with the manufacturer or seller before ordering; do not force a filter into place.
For owners of a compatible 2.2 L/74 oz Petory fountain, the listed five replacement filters and five foam filters are a refill option. The product listing states compatibility with a 2.2 L/74 oz Petory fountain; it does not establish a fit for every 2.2 L fountain. This is a reason to check your exact model, not a universal filter recommendation.
Keep drinking options available
Some cats like moving water, but preferences vary. International Cat Care advises offering several accessible water bowls as well as considering a fountain, so a fountain need not be the only place your cat can drink. If you are still deciding whether to use one, see our cat drinking-station guide.
If your cat suddenly drinks much more or less than usual, or seems unwell, contact a veterinarian rather than trying to solve the change by replacing a filter.
The takeaway: keep the whole fountain clean, follow its own filter schedule, and verify the model before buying refills.
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