How do I fit the A1377?

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.

Aquarium filter media

Fluval Carbon for Spec/Evo/Flex Aquarium Kit, 45 g, 3-Pack

A1377

Fits 7 models · replace every month

Wrong part, or your model missing? Tell us. A person checks every report.

GenuineGenuine Fluval

$2.63 each

3-pack $7.88

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 · $2.63 each · 3-pack $7.88

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.

Open Aquarium Spare Parts · $2.63 each · 3-pack $7.88

Compare 2 sellers

AUD, before delivery. Each price shows when it was checked.

Genuine Fluval

2 sellers

Aquarium Spare PartsGenuine · checked 30 OctGenuine part · Lowest genuinechecked 30 Oct$2.63 each3-pack $7.88OpenGo to seller

PETstockGenuine · checked 27 Oct · out of stock when checkedGenuine part · out of stock when checkedchecked 27 Oct$2.99 each3-pack $8.97OpenGo to seller

Open cheapest seller · $2.63 each · 3-pack $7.88

Opens Aquarium Spare Parts in a new tab. Their page is the source of truth for price, delivery and returns.

How long it lasts

Usually every month (Fluval puts the life of carbon in an aquarium at about a month).

Not due yet?

Get a nudge when your aquarium filter media is due — it's every month. One email two weeks before, no newsletter. Manage or stop it anytime.

How to change the A1377 aquarium filter media

Watch the guide or follow the steps.

YOUR FIRST AQUARIUM, DONE RIGHT | Fluval Spec Series · Fluval Aquatics (official)

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 new carbon about every month (Fluval says carbon lasts about a month in an aquarium).
5Put the media back in the same chambers, refit the cover and plug the pump back in.

Every number this part goes byA-1377 · A1377

Retail name:: A-1377
Retail name:: A1377

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.

Your appliance model

Fits these 7 Fluval modelsEvo 19L, Evo 52L, Flex 123L, Flex 34L, Flex 57L …

Fluval7 models

Common questionsWhat does the A1377 fit? · How often should I replace the A1377? · Where can I buy the A1377 in Australia?

What does the A1377 fit?: The Fluval Carbon for Spec/Evo/Flex Aquarium Kit, 45 g, 3-Pack (part A1377) fits 7 Fluval models, including the Evo 19L, Evo 52L and Flex 123L. Every one is listed on this page.
How often should I replace the A1377?: Every month. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the A1377 in Australia?: We track 2 Australian sellers for the A1377; the lowest listed price when we last checked was A$2.63 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
How do I fit the A1377?: 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 A1377 match? . Reports go to a person, not a bot.