The PetKit EverSweet Ultra takes the PetKit Fountain Cube C (EverSweet Ultra) as its filter; replace it every month; Australian sellers list it from A$12.99 as of 21 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your pet fountain
PetKit EverSweet Ultra
Pet fountain
Confirmed against PetKit's listConfirmed against PetKit Australia's compatibility list
Not yours? ChangeSave it · remind me every month
Takes the Fountain Cube C filter
Fountain Cube C (EverSweet Ultra) · replace every month · check the code printed on your old filter before ordering.
Your pet fountain
Pet fountain
Confirmed against PetKit's listConfirmed against PetKit Australia's compatibility list
Takes the Fountain Cube C
Filter · every month · check the code on your old filter.
Other PetKit pet fountains and their filters
The Fountain Cube C fits the EverSweet Ultra only. These PetKit models take a different filter:
GenuineGenuine PetKit
$12.99
Manufacturer · 21 OctLowest genuine · Manufacturer · checked 21 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by PetKit. Compatible: another brand. Check certification on the seller's page.Genuine is made by PetKit. Compatible is made by another brand. Check the seller's certification details before choosing.
Lowest price · $12.99
Manufacturer. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Manufacturer in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Usually every month. The app reminds you when it is due.
After replacing: 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.
Not due yet?
Get a nudge when your filter is due — it's every month. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the filter in your PetKit EverSweet Ultra
Watch the guide or 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.
Every number this part goes by
- Retail name:
- Fountain Cube C
- Retail name:
- PETKIT Fountain Cube C
Sellers list any of these; they are the same part.
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 month.
Where the model number is: 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 1 PetKit model
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 month. 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 track 1 Australian seller for the Fountain Cube C; the lowest listed price when we last checked was A$12.99 at Manufacturer. Prices are re-checked daily and dated on this page.
- 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.
- What happens if I don't change it?
- The pad clogs, the pump works harder, and the water the fountain was bought to keep fresh is not.
- How do I reset the reminder?
- The PetKit app tracks the cube's 30 days; reset it there after fitting.
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