The Fluval U1 takes the Fluval Bio-Foam Pad for U1 Underwater Filter, 2-Pack (part A485) as its filter media; Australian sellers list it from A$6.88 as of 30 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your aquarium filter
Fluval U1
Aquarium filter
Confirmed against Fluval's listConfirmed against Fluval's own compatibility list
Not yours? Change
Takes the A485 filter media
Bio-Foam Pad for U1 Underwater Filter, 2-Pack · check the code printed on your old filter before ordering.
Your aquarium filter
Aquarium filter
Confirmed against Fluval's listConfirmed against Fluval's own compatibility list
Takes the A485
Filter media · check the code on your old filter.
Other Fluval aquarium filters and their replacement media
The A485 fits the U1 only. These Fluval models take a different filter media:
GenuineGenuine Fluval
$6.88
Aquarium Spare Parts · 30 OctLowest genuine · Aquarium Spare Parts · checked 30 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Fluval. Compatible: another brand.Genuine is made by Fluval. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $6.88
Aquarium Spare Parts. 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.
This aquarium filter also takes a carbon filter
- Fluval Clean & Clear Cartridge for U1/U2/U3/U4 filtersOpen Aquarium Spare Parts$27.88
Separate from the filter media. Reduces dissolved impurities (chemical media).
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Aquarium Spare Parts in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it as the filter's manual says; Fluval gives no set interval for this foam.
How to change the filter media in your Fluval U1
Watch the guide or follow the steps.
- 1Unplug the filter and lift it out of the aquarium.
- 2Open the filter and slide out the foam pad and the cartridge (U2 to U4 also hold BIOMAX).
- 3Rinse foam in water from the aquarium; rinse BIOMAX in aquarium water only: Fluval says never to rinse it with tap water.
- 4Fit the new Bio-Foam where the old media sat. Fluval says not to replace all filter media at the same time.
- 5Close the filter, put it back in the aquarium and plug it in.
Every number this part goes by
- Retail name:
- A-485
- Retail name:
- A485
Sellers list any of these; they are the same part.
About your Fluval U1
Fluval aquarium filter — U Series underwater filter. Its filter media is the Bio-Foam Pad for U1 Underwater Filter, 2-Pack, part A485.
Also in this aquarium filter: Fluval Clean & Clear Cartridge for U1/U2/U3/U4 filters.
Where the model number is: The model is on the filter's lid, motor head or a label on its side (Fluval 307, Eheim Classic 2215). For a tank with a built-in filter, use the tank's name.
Fits this Fluval model
Fluval1 model
Common questions
- Which filter media fits the Fluval U1?
- The Fluval U1 takes the Fluval Bio-Foam Pad for U1 Underwater Filter, 2-Pack (part A485).
- Where can I buy the A485 in Australia?
- We track 1 Australian seller for the A485; the lowest listed price when we last checked was A$6.88 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
- How do I fit the A485 in a Fluval U1?
- No tools, a few minutes: 5 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- Spent carbon stops removing odours and discolouration, and clogged pads slow the flow, so the filter moves less water through the tank.
Something looks wrong with the U1 match? . Reports go to a person, not a bot.