3 Components
In one set. For ideal fertilization.
2 Sets
Whether nano or large aquarium, we have the right set for you.
1 Goal
Healthy and magnificent plants.
3 Components
Both systems consist of the proven Plant System components.

Plant System S7
Supplementary nutrients including trace elements important for plant metabolism and vibrant coloration.
Included in the set:
Plant System Set: 100 ml
Plant System Set Nano: 100 ml

Plant System E15
Iron supplement, now also available in liquid form for improved application and nutrient absorption.
Included in the set:
Plant System Set: 100 ml
Plant System Set Nano: 25 ml

Plant System V30
Basic fertilization with important macronutrients for sustainable plant growth.
Included in the set:
Plant System Set: 100 ml
Plant System Set Nano: 25 ml
2 Sets
With the new E15, the Plant System has finally reached the nano range.
1 Goal
Since 1966, DENNERLE has pursued one goal: beautiful, magnificent, and healthy planted aquariums for everyone.
"Especially in the nano range, droplet dosing is worth its weight in gold. Simple, effective, and reproducible."
— Volker J., Aquascaper
"I love simple systems. This one works—visibly and reliably."
— Sarah L., beginner
What is the right fertilizer for my aquarium?
There are countless ways you can set up your little piece of nature. Depending on how many animals or plants you have in your aquarium, we recommend different fertilizers. You'll find the answer to this question in the table.
aquariums |
![]() Simply planted aquarium
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![]() For well-planted aquariums
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![]() For well-planted, large aquariums
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![]() For aquascapes
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products |
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planting | ||||
With no or little fish stock |

2025
The Dennerle Plant System Set is a sophisticated three-component fertilizer system for healthy, vibrant, and colorful aquarium plants. Based on the original concept from 1980, it combines decades of experience with modern liquid dosing and a clearly structured care plan.

2006 - 2008
2006 marks the refinement of the proven concept—clearly structured care routines and a more precise, everyday-practical system. 1980 marks the launch of the Plant System Set—the moment when experience became a reliable principle: separate nutrient applications for reproducibly healthy plants.
2008
From miniature to magic: shrimp, snails, miniature aquascapes – small biotopes, big fascination. Today, more precise, more sustainable, closer to nature than ever before.

1980
In many aquariums, plants grew very poorly or were plagued by unsightly algae infestations. Based on decades of experience in cultivating aquarium plants, Dennerle began to develop a system that would ensure success for everyone and make the aquarium trouble-free and algae-free.

1966
A man kneels in a tropical stream, stroking leaves, noting colors, currents, and light. Ludwig Dennerle listens to the stories of aquatic plants – patiently, leaf by leaf. Curiosity becomes method, and method becomes a vision: to understand nature, preserve it, and bring it home. Thus, Dennerle is born – from wet boots, notebooks, and a love of living plants.
FAQs
What is the difference between the regular and the Nano set?
The Nano Set is for aquariums up to 100 L and uses dropper bottles for fine dosing. The Standard Set has dosing caps for aquariums larger than 100 L.
How often do I need to fertilize?
Every week: S7, E15 mid-month, V30 at the end of the month. A clear plan for everyone.
Is the system also suitable for beginners?
Yes, it is easy to use and avoids typical mistakes such as over-fertilization.
Can I combine the system with soil?
Yes, it harmonizes with active soils and supports nutrient replenishment.
Is the system shrimp-friendly?
Yes, with proper dosage it is also ideal for shrimp tanks.
Why not an all-in-one fertilizer?
Because plants absorb nutrients at different rates.
Therefore: separate addition = better result.
What's new about E15?
We changed for tablets to a liquid version. Which made it also adaptable for Nano aquarium.
Can I purchase individual components?
Yes, all three fertilizers are also available individually.
Does the set also work without CO2?
Yes, but you will achieve the best results with CO₂ supply.
What does “innovation from tradition” mean?
The system is based on the original concept from 1980 – new
designed for modern aquariums.
Do I need all three components?
Yes, they are coordinated. Each fulfills a unique function – for the balance in the aquarium.