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JBL The 7 balls

JBL The 7 balls

  • Slow-release fertiliser for nutrient supply to the roots
  • Contains iron and minerals in a form that is easily available to the plants
  • Does not contain phosphate and nitrate
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€ 0.35 / piece
incl. 16% VAT
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JBL The 7 balls are hardened balls containing fertiliser enriched with all the nutrients aquatic plants need, especially with iron and trace elements, using a special production method. The fertilising balls only give off nutrients slowly, which makes them a great depot fertiliser. The ball form is easy to apply in tanks that are planted already, Especially suitable for targeted fertilisation or re-fertilisation of aquatic plants that take up nutrients mainly over the roots, like e.g. species of the genera Echinodorus, Cryptocoryne, and many more.


  • For long-term root fertilising in an established aquarium
  • Contains iron and minerals in a form readily accessible for plants to absorb through the roots
  • Does not contain phosphates and nitrates
  • Depending on the plant size, press one or several balls into the root zone once a year



JBL is a German company with a long tradition and a vast product range for aquarium enthusiasts. From high-quality fish and shrimp food over external filters to aquatic plant fertilisers - JBL offers an enormous choice for every aquarium keeper.

The research and development department of JBL constantly brings new innovative products onto the market. No matter whether you are an aquascaper, fish keeper, shrimp keeper or planted tank enthusiast, JBL offers suitable tools and accessories for all of these aspects of the hobby in order to support aquarium enthusiasts with the set-up and maintenance of their tanks.

General information

Item no.
EAN 4014162201119
Weight 0,22 kg
Shipping weight 0,30 kg

Customer reviews

This item has been rated 4.4 out of 5 stars
5 Reviews
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5 Stars(3)
4 Stars(1)
3 Stars(1)
2 Stars(0)
1 Star(0)
Florian S.
15th March 2013
JBL - Die 7 + 13 Kugeln
JBL - Die 7 + 13 Kugeln

etwas groß um sie zwischen bodendecker zu stecken, erfüllen aber ihren zweck

simone h.
einfache Düngerlösung ohne Spezialuntergründe
27th January 2018
JBL - Die 7 + 13 Kugeln
JBL - Die 7 + 13 Kugeln

Mit den JBL "Die 7 (+13) Kugeln" bekommt man eine günstige Düngerlösung. Die Kugeln sind vielleicht etwas groß für Nano-Aquarien, lassen sich aber auch vor Verwendung... (read more)

Christian A.
19th January 2018
JBL - Die 7 + 13 Kugeln
JBL - Die 7 + 13 Kugeln

Zum nachdüngen ein absoluter super Dünger. Cryptocorinen usw. erstrahlen nach einer gewissen Zeit wieder in den schönsten Farben. Ich kann diesen Dünger nur empfehlen.

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