The short answer
Filter intervals run from every two weeks (PETLIBRO Dockstream, Veken, FOFNON) to about every 30 days (Catit PIXI, PETKIT filter units). Clean the pump and bowl weekly whatever the filter schedule.
Stated intervals
| Filter | Fits | Change |
|---|---|---|
| PETLIBRO Dockstream filters | Dockstream WF106, WF116, WF105, WF115, WF005, WF305 | Every 2 weeks |
| Veken F1 | C1, C1 Classic, D1, D1 Pro | Every 2 weeks |
| FOFNON filters | FOFNON 3.2 L and 7 L | Every 2 weeks |
| Catit PIXI filters | Catit PIXI | About every 30 days |
| Filter Unit 3.0 (third-party) | PETKIT Eversweet Solo 2, SE, 3 Pro | Every 30 days |
Cleaning the pump
- Unplug and take the pump apart weekly.
- Rinse the impeller and pre-filter sponge.
- Keep water above the minimum line so the pump never runs dry.
Monthly cost
A two-week filter means two or more filters a month. Our cost calculator turns a pack price into a monthly cost.
Products mentioned
Questions readers ask
How often should I change a cat fountain filter?
Follow the maker: two weeks to a month for the filters we cover.
Do filter-free fountains exist?
Yes; FEELNEEDY's wastewater-separation fountain uses no filters.