Aquarium filter media
Fluval Foam Filter Block for Flex Aquarium Kit (57 L and 123 L)
A1375
Fits 2 models
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GenuineGenuine Fluval
$13.88
Aquarium Spare Parts · 30 OctLowest genuine · Aquarium Spare Parts · checked 30 Oct
CompatibleCompatible option
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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 · $13.88
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AUD, before delivery. Each price shows when it was checked.
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How long it lasts
Replace it as the filter's manual says; Fluval gives no set interval for this part.
How to change the A1375 aquarium filter media
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Unplug the pump and lift off the cover of the filter compartment at the back of the tank.
- 2Lift the media (foam block, carbon and BIOMAX) out of the filter chambers.
- 3Rinse the foam block in water from the aquarium; Fluval says to rinse BIOMAX monthly in aquarium water.
- 4Fit the new foam filter block where the old media sat. Fluval says not to replace all filter media at the same time.
- 5Put the media back in the same chambers, refit the cover and plug the pump back in.
Every number this part goes by
- Retail name:
- A-1375
- Retail name:
- A1375
Sellers list any of these; they are the same part.
Will it fit your appliance?
Type your model number and we'll check it against the makers' lists.
Common questions
- What does the A1375 fit?
- The Fluval Foam Filter Block for Flex Aquarium Kit (57 L and 123 L) (part A1375) fits the Fluval Flex 123L and Flex 57L.
- Where can I buy the A1375 in Australia?
- We track 1 Australian seller for the A1375; the lowest listed price when we last checked was A$13.88 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
- How do I fit the A1375?
- 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.
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