Substrate (gravel) cleaner for cleaning aquariums with 20-45 cm in hight

  • Sophisticated and highly effective gravel cleaner to siphon off waste in aquariums from 20 cm height upwards
  • Use: shake the gravel cleaner, let water flow into the bucket, siphon the waste out of the substrate, close the stopcock when finished
  • A corner on the round gravel cleaner ensures an efficient and powerful whirl effect so you can move and easily siphon off dirt from the aquarium corners
  • The protective sieve can be removed for cleaning and prevents plants, shrimps and fish from being accidentally sucked in
  • Package contents: 1 gravel cleaner with suction valve, Ø 4 cm, length 27 cm, incl. 2 m hose (12/16 mm), 2 hose clips, stopcock
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Recommended retail price incl. VAT
You can find this item in your specialist and online shop
Product information

Regular water change
Food, plant remains and metabolic products pollute the aquarium water. Since aquarium filters can’t completely remove these substances from the water and a large part of the waste enters the aquarium bottom, a regular partial water change (about every 2 weeks 1/3 of the water content) needs to be carried out. Always siphon off the waste from the substrate when carrying out a partial water change. After the partial water change a good water conditioner such as JBL Biotopol is vital to prepare the new tap water for fish.

Simple to use: Hold the gravel cleaner underwater in the aquarium, shake it up and down and hold the end of the hose inside the bucket. Water will then flow into the bucket. Clean the bottom with the gravel cleaner. To finish, simply remove the gravel cleaner from the water or/and close the stopcock at the end of the hose.

How to clean the aquarium bottom properly:
Push the gravel cleaner into the aquarium substrate with twisting movements. The suction pulls the substrate and the dirt in the gravel cleaner upwards. The substrate falls back down under its own weight and only the dirt is sucked out of the aquarium. With fine sand, you can adjust the suction by lifting the gravel cleaner so that the light sand also falls back down. A sieve in the bell of the cleaner prevents fish and shrimp from being accidentally sucked in. The sieve can be removed for cleaning.
If you have a long-term substrate fertiliser under the covering gravel layer (e.g. JBL PROFLORA AQUA BASIS), do not insert the gravel cleaner far. Insert it only as deeply as the covering substrate layer is thick.



Art. no.:
EAN Code:
40 mm
270 mm
Volume packaging:
3.506 l
Gross weight:
641 g
Net weight:
541 g
Weight factor:
Packaging dimensions (l/h/w):
150/410/57 mm


Animal species: Arowana, Axolotl, Barbels, Bettas, Bichirs/reedfish, Blowfish, Catfish, Cichlids (South America), Corals, Crayfish, Danions, Discus, Dwarf shrimps, Flowerhorn, Gobies, Goldfish, Gouramis, Guppy, Juvenile fish, Killifish, Livebearers, Loaches, Panchaxes, Rainbowfish, Snails, Spiny eels, Tetra, Veiltails, freshwater butterflyfish
Animal size: For all animal sizes
Animal age group: All aquarium fish
Volume habitat: > 450 L
Material: plastic (ABS) / plastic (PS)
Colour: grey / black

Electronic label / illuminant

Mercury: No
Dimmable: No
What am I doing wrong? JBL AquaEx Set 20-45 sucks in the substrate and clogs up the sieve in just seconds.

A substrate, e.g.: Manado is a rather light substrate. If it is sucked in by the gravel cleaner, it is recommended to reduce the water current as a remedial action.

Blog (opinions & experiences)

Cleaning in the aquarium made easy with JBL PROCLEAN products

With the right tools, cleaning is child's play and done in no time at all. Cleaning can even be fun.

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JBL TV #36: Home moving with an aquarium - How to move smoothly from A to B

If a home move with the aquarium is well prepared, it will not cause any problems.

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JBL TV #35: Water change in the aquarium - Why? How? When?

Every 2 weeks 1/3 of the aquarium water needs to be renewed instead of just replenishing the evaporated water.

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Your filter bacteria need your full support!

Even though a lot of aquarists believe that their aquarium is kept perfectly clean by the filter, this is nothing but a fairy tale. A filter to keep the aquarium floor, the spaces between the decorations and the water clean would have to produce a current strong enough to make the fish all (and very clearly visibly) stick to the glass pane!

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JBL TV #28 Part 3: Aquarium care is so easy! Every 2 weeks.

We show you everything you need to do in a 2-week rhythm and how to do it properly.

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Substrate cleaning in the aquarium - the easy way

You definitely need to siphon off the dirt (called mulm) from the aquarium ground during every fortnightly partial water change. Special gravel cleaners are available for this purpose.

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#jbldeal – Now you can benefit!

As a member of the myJBL community you have exclusive access to special promotions. We have attractive benefits and offers for you. Don’t miss out!

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Automatic water change - No drips and spills!

Today let’s talk about making the water change less messy, to save the living room carpet from getting ruined.

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Here’s how you clean your aquarium substrate correctly!

Seliment bell, mulm vacuum cleaner, substrate cleaner, gravel cleaner, vacuum cleaner,.... - these are all terms for a kind of hoover for the aquarium, but do you need such a thing? YES and we explain why!

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Hi guys, During my work at JBL I have been confronted time and again in various forums, posts or social media with theories in aquaristics which are often considered to be correct - but in reality do not correspond to the truth at all. For this reason we thought we’d start a short series called: JBL Aqua-Myths.

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Simple & clever aquarium cleaning: JBL PROCLEAN AQUA IN-OUT & AQUA EX

The AQUA IN-OUT aquarium cleaning system is one of the most popular JBL products! No wonder, because siphoning aquarium water with a substrate cleaner (gravel cleaner) and refilling it directly with the same system from the tap with just one turn of the lever is so easy and convenient that you simply can't say no to it.

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Reference guide (Themeworld)

Filter material as troubleshooter

Which filter media combats which problems? What you need to optimise water values?

Marine water

There is a solution to almost every problem! And the hardest part is finding the cause of the problem.

Reducing problematic water values

How to lower critical water values.

Algae control

Here’s how to combat algae successfully and lastingly.

Water change

The most important maintenance measures: the partial water change. How to carry out a partial water change correctly?


An aquarium requires less work than any other pet. Here’s how to do it properly!

Daily care

How much daily or weekly care is involved? What are the basic maintenance measures for your aquarium?

Useful equipment

Which tools and equipment facilitate your aquarium maintenance? What is really useful?

Run-in phase

What do you need to consider during the initial phase (run-in phase) of your aquarium? When can you add fish?


What is the perfect substrate? Which material is suitable? What‘s the right grain size?

Adding water

Here’s how to add water to your aquarium? Adding water without disturbing your aquarium made easy. Tips and tricks for adding water.

Aquarium filters and aquarium accessories

Why is a filter important? What function does your filter have? What do you have to look out for when choosing a filter? What types of filter are available?

The marine aquarium

Holiday at the coral reef - in your own living room! Marine aquariums are the most exciting branch of aquatics

Biotope (habitat) aquarium types

A real piece of the Amazon or, with the Congo, a piece of the heart of Africa. A habitat (biotope) aquarium is a challenge. Can you emulate nature?

Aquascaping aquarium type JBL Dreamscape®

Mountains, valleys, meadows and fish! Create your dreamlike landscape under water with the Dreamscape® aquarium

Rocky reef aquarium type JBL Malawi Rocks®

The fish of Lake Malawi are as colourful as the fish in the coral reefs. This aquarium brings a bit of freshwater reef into your living room

Jungle aquarium type JBL Rio Pantanal®

A bit of jungle river in your living room. Lively underwater action! No problem with the JBL Rio Pantanal® aquarium

Goldfish aquarium type JBL Goldfish Paradise®

Lively goldfish in the aquarium enhance any room perfectly! Invite some new flatmates into your home with this goldfish aquarium

Ventilation and moisture regulation

How to ventilate a terrarium properly and how to adjust the humidity? Ventilation and moisture are the key to good pet ownership


safety instructions

  • safety instruction for accessories
    • Filename:
spare parts
Customer reviews


Overall rating: 4.9
14 public review(s) for this product.

0 Reviews

14 more reviews in other languages

14 Reviews in other languages

malawidortmund - German

Wie erwartet was eine gute Mulmenglocke machen soll, die Größe ist perfekt für kleine Aufzuchtbecken oder klein Aquarien 👍🏼

_aqua4you_ - German

Super einfache Bedienung, die Automatische Ansaugung macht das ansaugen mit den Mund überflüssig. Der Wasserwechsel uns die Bodenreinigung machen richtig Spaß mit dieser Mulmglocke. Einziges Manko ist bei Sandigen Untergrund die Ablagerungen im Ansaug Bereich. Diesen kann man aber demontieren und ausspülen.

Aquawelten - German

Anfangs habe ich gedacht das es sicherlich zu kompliziert ist. Ich wurde eines besseren belehrt. Diese Technik das Wasser anzusagen ist einzigartig gut! Durch den mitgelieferten Hahn ist es kinderleicht und es wird einem viel Arbeit abgenommen .

Die Länge des mitgelieferten Schlauchs ist perfekt!

tropheus_italia - Italian

Ottimo sifone, per la pulizia dei nostri acquari lo consiglio!

imaquarium - German

Das perfekte Produkt.

Ich habe während meiner Zeit als Aquarianer schon einige Mulmsauger verwendet und muss, nein, darf, ohne jede Einschränkung sagen: Das ist, bei weitem der beste Mulmsauger, den jemals hatte. Bedienung und Durchfluss sind einfach ein Traum. Bereits nach wenigen schnellen Bewegungen beginnt das Wasser zu fließen. Durch den kleinen Hebel am anderen Ende lässt sich der Durchfluss drosseln oder ganz stoppen, falls man den Wasserwechsel unterbrechen möchte, oder der Eimer mal wieder voll ist.

Die Länge des Schlauches ist, meiner Meinung nach, sehr gut. Ich kann den Sauger leicht alleine bedienen. Außerdem ist ein Gitter integriert wodurch verhindert wird das Garnelen oder Fische eingesaugt werden. Gleichzeitig sind die Poren aber groß genug, sodass auch größere "Mulmstücke" durch passen.

Von mir gibt es eine klare Kaufempfehlung. Ich kann das Produkt jedem ans Herz legen.

Tipp: Mit dem ClipSafe Vario lässt sich der Schlauch leicht am Aquarium oder Eimer befestigen.

a_jak_akwarium - Polish

The perfect solution for medium-sized aquariums. I cannot imagine an aquarium service without it.

Phils_waterplants - German

Toller Mulmsauger. Durch die automatische Ansaugvorrichtung wird einem das Leben sehr erleichtert. Dazu gefällt mir die Variabilität sehr. Man kann die Mulmglocke entweder mit oder ohne Reinigungskamm betreiben. Auch ist positiv anzumerken, dass der Mulmglocke Schlauchklammern beiliegen. So kann man direkt loslegen! Klare Kaufempfehlung

marcs.jungle - German

Top Produkt!

Einfach in der Bedienung. Ein paar mal geschüttelt und das Wasser läuft. Da der Aqua Ex ab einer Seite eine Kante hat, kommt man auch gut in die Ecken.

math_scapes - French

Great product ! The valve is a game changer together with the house holders. Now you can adjust the flow very easily with no more wet floors thanks to the holders.

You have there a complete kit and you don't have to buy anything else !

Thomas_aquascapingcz - Czech

šikovný produkt, který nikoho neurazí a funguje suprově, nejlepší je že u toho je i uzavíratelný ventil podle kterého mužete štelovat prutok vody

aquarium.meer91 - German

Diese Mulmglocke ist nur zu empfehlen.

Man muss nicht mehr ansaugen, da es durch kurzes Schütteln alleine ansaugt. Der Bodengrund wird in der Glocke schön durchwirbelt, sodass der Mulm sehr gut abgesaugt wird.

Der_Egger - German

Eine klare Empfehlung.

Durch das Sieb / Gitter wird verhindert, dass versehentlich Fische oder Garnelen eingesogen werden.

Besonders hervorzuheben ist die automatische Ansaugvorrichtung. Diese funktioniert super einfach und super gut. Zusammen mit den Clips für den Beckenrand und den Eimer, wird ein perfektes Rundum - Paket geliefert.

der_ aquariumschrank - German

Eine Super Mulmglocke mit integrierten gitter das man keine Fische und Garnelen einsaugt

SauerlaenderWelskeller - German

Ein guter Absauger für die Reinigung des Aquariums!

Wir kennen es alle, unsere Schützlinge machen eine ganze Menge Dreck auf einmal. Gut das es dafür den Pro Clean Aqua Ex gibt. Er ist schnell zusammengebaut und leicht in den Handhabung. Das Absaugen funktioniert schnell und einfach. Da macht auch ein unbeliebter Wasserwechsel Spaß :-)

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