JBL Nano-Catappa
Tropical almond leaves for small freshwater aquariums

  • Natural care for fish and invertebrates in freshwater aquariums
  • Natural effect of tropical almond leaves: promotes well-being, vitality and spawning readiness
  • Natural water conditioner and protection for mucous membrane from the natural habitat of our aquarium dwellers. Promotes well-being, vitality and spawning readiness. Tanning agents have a compressing effect on the mucous membrane and prevent diseases.
  • Directly harvested from the tree, cleaned, smoothed and sun-dried
  • Contents: 1 packet Nano-Catappa, 10 leaves, use: 1 leaf/15 – 30 l water. Active substances are released completely after 1 – 3 weeks
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Price: 10,35 €
Recommended retail price incl. VAT
You can find this item in your specialist and online shop
Product information

Nature at Home – Home for fish and plants
Fish and invertebrates need to feel as much at home in the aquarium as in the wild Transform your aquarium water into biotope-like water to protect your aquarium dwellers. Clean water – optimal water quality. The natural ingredients of the tropical almond leaves (Catappa) have quite a lot of positive properties for aquarium dwellers, tanning agents amongst others. After 1-2 days the leaves sink to the bottom. After 1-3 week the active substances have been completely released. Then a new leaf can be added. Older leaves can be removed or they can stay in the aquarium as additional feed for sucker catfish and shrimps. Keeps permanently when stored dry.


JBL Nano-Catappa

Art. no.:
EAN Code:
10 piece(s)
300 l
Volume packaging:
0.74 l
Gross weight:
40 g
Net weight:
14 g
Weight factor:
Packaging dimensions (l/h/w):
30/145/170 mm


Animal species: Arowana, Axolotl, Barbels, Bettas, Bichirs/reedfish, Blowfish, Catfish, Cichlids (South America), Crayfish, Danions, Discus, Dwarf shrimps, Flowerhorn, Gobies, Goldfish, Gouramis, Guppy, Juvenile fish, Killifish, Livebearers, Loaches, Newts, Panchaxes, Rainbowfish, Snails, Spiny eels, Tetra, Veiltails, freshwater butterflyfish
Animal size: For all animal sizes
Animal age group: All aquarium fish
Volume habitat: 300 L
Colour: brown
Dosage: 1 leaf per 15 - 30 l water

Electronic label / illuminant

Mercury: No
Dimmable: No
When should Catappa leaves be re-dosed?

The effect of JBL Catappa XL and Nano-Catappa unfolds completely after 1-3 weeks. Shrimps and catfish in particular also like to use the leaf as a food source and nibble at it. Once the leaf is a mere skeleton to the eye, it needs to be removed and re-dosed.

Blog (opinions & experiences)

JBL TV #59 Biotope Aquaristics - The fascination of natural underwater worlds with Heiko Bleher

It’s hard to find anything more exciting than biotope aquaristics – recreating the real habitats of our aquarium fish. But what exactly is biotope aquaristics and what do we need to know before recreating a biotope?

Find out more

JBL TV #17: Water Treatment - Recording of the Livestream

Water treatment is explained in detail with examples and small experiments. The biologist Heiko Blessin shows how a water conditioner works in terms understandable to non-chemists.

Find out more

Misunderstandings – typical beginner mistakes

Based on our own experience in customer service and the many messages and questions we receive, we have put together the typical mistakes beginners may make. The experienced aquarist might well smile, but if they are honest, these are mistakes we all made at the start, aren’t they?

Find out more

Biotope Aquatics Part 2: Mexico, Upper Candelaria River near the Sandbank

The cichlid pair with juvenile fish in the middle is going to be the first thing you notice, of course, but after a while you’ll see that this aquarium looks like a piece of nature.

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Biotope Aquatics Part 1: South America, a Tributary of the Rio Negro near Barcelos

I must admit that when I first looked at the aquarium photos, I was not sure if it was an underwater photo of the area or an aquarium.

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Lack of oxygen in the morning

The fish stay under the water surface in the morning, gasping for air.

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Biotope Aquatics: How authentic are the aquariums really?

Are you familiar with biotope aquatics? If not, you’re missing out on the most sophisticated aquatic discipline!

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Outline: Fertilisation in the Aquarium

The JBL plant care concept leads to vigorous and healthy growth even with the most demanding aquatic plants. JBL has all the components you need, whether it’s a fertiliser, a bottom substrate or a fully automatic CO2 fertiliser system.

Find out more

Care products - The best solutions for your aquarium

With the right products, aquarium care is not only easy, but can also be a lot of fun! The formulas that make up JBL products are based on intensive research and, especially with care products, their effects are not always immediately visible, yet in the medium and long-term they’ll result in a beautiful aquarium and healthy fish.

Find out more
Laboratories and calculators

Online Hospital

Do you have ill fish and you don’t know what disease it is and how to treat it? Here you can diagnose diseases using photos or identification keys and you can find out where they come from and how to treat them. By showing you over 500 photos to identify and cure fish diseases, we enable you to find a diagnosis and solution.

Water Analysis Online Laboratory

Enter your water parameters and get an in-depth analysis of your values in a matter of seconds. You enter your water values – and we analyse! Here you have the opportunity to enter the measured water values directly into the JBL Online Laboratory. This will analyse your values and explain and submit corrective measures.
Reference guide (Themeworld)


Recognising and treating fish and invertebrate diseases

Deficiency symptoms

Here’s how to prevent deficiency symptoms in fish and plants

Fish nutrition

The right diet for ornamental fish. The right food for every species thanks to the PRONOVO species concept.

Daily care

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

Food sorts

What needs to be considered when feeding ornamental fish? How much and what food?

Invertebrate species

What invertebrate animals are suitable for your aquarium? What demands do invertebrates have? What do you need to consider for their care?

Fish species

Which fish species suit your aquarium? What demands do the fish species have?

Planning and stock

Which fish are compatible? What do you need to consider when selecting fish?

Water treatment

What does water treatment mean? How do you make tropical water using tap water?

Water values

Which water tests are important? How can you achieve perfect water values?

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?

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

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

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.

Aquascaping aquarium type JBL Dreamscape®

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


safety instructions

  • safety instruction for accessories
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Customer reviews


Overall rating: 5.0
13 public review(s) for this product.

0 Reviews

13 more reviews in other languages

13 Reviews in other languages

AquaBoxOfficial - German

Finde das man JBL Nano-Catappa in jedem Becken super einsetzen kann.

Nicht nur werden hier auf natürliche Weise Keime beseitigt sonder es ist zugleich ein tolles Futter für Schnecken und Garnelen.

LadyDiscus - Polish

L. Leijenaar - Dutch

shrimpscapes_ - German

Prima Dauerfutter im Garnelenbecken. Man kann nicht "überfüttern", die Tiere mögen die Blätter und obendrein ists auch noch gut für die Wasserwerte

G.E.P.P. - French

JBL Nano Catappa idéal pour nos nanos bacs

Carl, G.E.P.P.

aquarium.meer91 - German

Ein natürlicher Wasseraufbereiter den wir gern in unserem Aquarium nutzen.

Welse, Schnecken und Garnelen fressen sogar die Seemandelbaumblätter.

Aquamahh - French

We all know the benefits of catalpa leaf, those ones are clean, so you can use them directly no need to clean

zulu_malawi - Italian

Ho preferito questo piuttosto che la Catappa XL per via del mio acquario che non richiede grandi volumi o quantità di prodotti essendo un 60litri.

È un prodotto a mio parere molto importante per la vitalità dei propri pesci e che non deve assolutamente mancare in casa.

Le foglie sono ben preparate e lavorate. Aprendo la confezione, non ci si ritrova davanti a delle foglie sbriciolate o rovinate.

aquascaping.tv - German

Moje krewetki uwielbiają Migdałecznika.

tangelo.shrimps - German

exotic_hive - German

Pflicht in all meinen Becken! Da ich eher kleinere Schwarzwasserbecken habe, sind die Nano Blätter von der Größe ansolut perfekt, denn im ganzen wirken sie neben ihren guten Effekten noch sehr dekorativ und bieten meinen kleineren Tieren optimale Verstecke.

SauerlaenderWelskeller - German

Für die Aufzucht kleiner L-Welse nicht wegzudenken!!

Wir sind der SauerlaenderWelskeller und betreiben eine kleine aber feine L- Welszucht mit vielen verschiedenen, auch seltenen L- Welsen wie z.B. dem L46 oder dem L333, L236, L354, L600 usw.

Wir benutzen die Nano Catappa Seemandelbaumblätter für die Aufzucht unserer L-Welse. Hierfür entnimmt man ein Blatt und reißt es in die passende Größe. Danach legt man das Blatt in den Aufzuchtkasten,wie z.B. Baby Home Oxygen oder Baby Home proAir. Das Blatt sinkt nach ein paar Tagen auf den Boden des Einhängekastens. Die kleinen L-Welse ernähren sich davon und es beugt so gerade in der Anfangszeit eingefallenen Bäuchen vor. Außerdem stärkt es das Wohlbefinden der Tiere und hällt die Keimdichte im Aquarium bzw. Einhängekasten niedrig. Das Blatt ist rein biologisch und wird mit der Zeit komplett verwertet.

Wir werden auch in Zukunft immer wieder auf die Nano Catappa Seemandelbaumblätter bei der Aufzucht unserer L-Welse zurückgreifen!

aquahobby.pl - Polish

super vorbereitete Blätter gebrauchsfertig

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