PetKit EverSweet Ultra filter
The PetKit EverSweet Ultra takes the PetKit Fountain Cube C (EverSweet Ultra) (part Fountain Cube C) as its filter; replace it every 1 months. Fitment confirmed against the manufacturer's compatibility list.
Appliance confirmed before purchase
Not yours? Change
Your pet fountain
PetKit EverSweet Ultra
Pet fountain · EverSweet
Takes this filter
Fountain Cube C (EverSweet Ultra)
Fountain Cube C
The right filter for EverSweet Ultra
PetKit Fountain Cube C (EverSweet Ultra)
- Replace every 1 months
- Fits inside the fridge
- Fits 1 model
The Fountain Cube C for the EverSweet Ultra: a carbon cube that drops into the fountain without tools and lasts 30 days, tracked by the PetKit app. Three per pack.
Reduces
- Chlorine taste and odours (carbon)
- Slime build-up
- Change
- Every 30 days (PetKit)
- Pack
- 3 cubes
Every number this part goes by
- Retail name:
- PETKIT Fountain Cube C
Where to buy
Every seller we track for this part, cheapest first. Genuine is the manufacturer's own part; compatible is a third-party filter made to fit. Prices are re-checked daily where the seller publishes them. Last checked 6 September 2026.
How long it lasts
Replace every 1 months — the app reminds you.
After fitting: The PetKit app tracks the cube's 30 days; reset it there after fitting.
Flow slows and taste drops off as the filter fills up. Changing on time is the whole point of the filter.
Not due yet?
This filter is due every 1 months. We'll email you when it's time — free, no spam.
Fitting it
A few minutes, no tools. Watch it done, then follow the steps.
- 1Lift the tray of the EverSweet Ultra and lift the old cube out of its slot.
- 2Drop the new cube in; no soaking or tools needed.
- 3Refit the tray and reset the cube's 30-day timer in the PetKit app.
About your PetKit EverSweet Ultra
PetKit pet fountain, pet fountain — EverSweet. Its filter is the Fountain Cube C (EverSweet Ultra), part Fountain Cube C, changed every 1 months.
Checking the model number: The fountain's name (PIXI, Flower Fountain, EverSweet 3 Pro) is printed on the base or the underside label; the filter type is printed on the old filter's packaging.
Fits these models
PetKit1 model
Common questions
- Which filter fits the PetKit EverSweet Ultra?
- The PetKit EverSweet Ultra takes the PetKit Fountain Cube C (EverSweet Ultra) (part Fountain Cube C). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my PetKit EverSweet Ultra?
- Every 1 months. Flow slows and performance drops off as the filter fills up, so it's worth doing on time.
- Where can I buy the Fountain Cube C in Australia?
- We link to 1 Australian seller for the Fountain Cube C; the seller's page shows the current price.
- How do I fit the Fountain Cube C in a PetKit EverSweet Ultra?
- No tools, a few minutes: 3 steps, listed on this page with the replacement video where the maker has one.
Own a EverSweet Ultra and this looks wrong? . Reports go to a person, not a bot.