How do I fit the 19643?

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 AC50 Power Filter, 70 g

19643

Fits 1 model · replace every month

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

GenuineGenuine Fluval

$5.29 each

3-pack $15.88

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 · $5.29 each · 3-pack $15.88

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 · $5.29 each · 3-pack $15.88

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

Genuine Fluval

1 seller

Aquarium Spare PartsGenuine · checked 30 OctGenuine part · Lowest genuinechecked 30 Oct$5.29 each3-pack $15.88OpenGo to seller

Open cheapest seller · $5.29 each · 3-pack $15.88

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 19643 aquarium filter media

Watch the guide or follow the steps.

How To EASILY Clean a Fluval AC Series Filter · Fluval Aquatics (official)

1Unplug the filter.
2Lift the media basket out of the filter body.
3Rinse foam in water from the aquarium; rinse BIOMAX in aquarium water only: Fluval says never to rinse it with tap water.
4Fit new carbon insert about every month (Fluval says carbon lasts about a month in an aquarium).
5Put the media basket back in the filter and plug it in.

Every number this part goes by19643 · 19644

Retail name:: 19643
Retail name:: 19644

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 this Fluval modelAquaClear 50

Fluval1 model

AquaClear 50

Common questionsWhat does the 19643 fit? · How often should I replace the 19643? · Where can I buy the 19643 in Australia?

What does the 19643 fit?: The Fluval Carbon for AC50 Power Filter, 70 g (part 19643) fits the Fluval AquaClear 50.
How often should I replace the 19643?: Every month. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 19643 in Australia?: We track 1 Australian seller for the 19643; the lowest listed price when we last checked was A$5.29 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
How do I fit the 19643?: 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 19643 match? . Reports go to a person, not a bot.