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Aquarium and pond equipment at the best prices!
For those passionate about aquariophily
Having trouble finalizing your order? Contact us 24 hours a day by email at information@zoanthus.fr.
Basin Analysis
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Balling Products
Seawater supplements
Basic elements
Fresh Water Supplements
CO2 system
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Water treatment
Bacterial Treatments
Adverse Treatments
Fish Care
Water treatment
Bacterial Treatments
Adverse Treatments
Fish Care
Water treatment
Bacterial Treatments
Fish Care
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Sand
Substrate for reactor
Sea Salts
Pond Substrate
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Seawater Equipment
Basin Equipment
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
The in vitro Rotala rotundifolia 'H'ra' brightens up any aquarium with its fine, elegant leaves that change from soft green to a vibrant orange under optimal lighting . This stem plant grows quickly and forms a charming little bush that perfectly adorns the bottom of the tank. Easy to maintain, it adapts equally well to conventional aquariums and demanding aquascapes. With regular maintenance and proper pruning, it offers a striking decorative effect. Its ability to change its color depending on the maintenance conditions makes it an ideal choice for bringing dynamism and originality to the aquatic environment.

Rotala rotundifolia 'H'ra' is a variety distinguished by its fine foliage and spectacular color. Halfway between the classic Rotala rotundifolia and Rotala 'Colorata', it retains a more delicate appearance, with slightly curved leaves and a creeping or semi-trailing habit depending on the conditions. Placed in a well-lit aquarium, it develops a vivid orange hue, perfect for contrasting with more traditional green plants.
Its rapid growth makes it an ideal plant for quickly filling an empty space in a planted container. It spreads into a dense bush that gives an impression of volume and movement. Although it can be used in the background, it is particularly appreciated in the middle of a container to structure a composition and add depth.
Although it adapts to many environments, this plant grows optimally under certain conditions:
It grows easily in a nutritious substrate , but can also adapt to conventional soil provided it has a good nutrient supply. A good filter is also recommended to prevent debris build-up and keep the water clean.
To fully enjoy the beauty of this plant, just follow a few simple steps. Remove the Rotala rotundifolia 'H'ra' from its in vitro dish, rinse it thoroughly to remove the growing gel, then divide it into several sections. Plant these sections in the substrate, spacing them slightly apart so they can grow well.
Its rapid growth requires regular pruning to prevent it from becoming overgrown. When pruned, it produces new side shoots, making the bush even more dense and colorful. To maximize its vibrancy, fertilization rich in iron and potassium is recommended.
Rotala rotundifolia 'H'ra' is highly valued by aquascapers for its bright appearance and ease of maintenance. It blends perfectly with green plants such as mosses, lawns or even decorative elements such as an aquarium root .

It can be used in a variety of ways: in the middle of a tank to structure a decor, in the background to create a dense plant mass, or even as a creeping carpet if it is cut very short and subjected to intense lighting. With its delicate foliage and evolving color, it adapts to all styles of aquariums.
ProFlora CO2 Multi Cylinder 500 U is a set of 3 disposable cylinders with 500 g of CO2 . Its installation is easy: screw the regulator with female thread on the male thread (M10x1) of the bottle.
Tropica 's Rotala wallichii is an exceptional stem plant for enthusiasts who love challenges... and rewards. With its finely cut foliage and spectacular pinkish-red color in good lighting, it transforms an aquarium background into a living tableau. It grows up to 30 cm tall and offers a magnificent contrast with surrounding green plants. Very decorative when planted in groups, it requires strong lighting and a well-established CO2 system . Soft, slightly acidic water and good nutrients are also essential to reveal its full potential. A true star for well-maintained tanks.
This SALIFERT brand analysis kit allows you to accurately measure the calcium level of your seawater. Allows you to take 50 to 100 measurements.
This analysis kit from the SALIFERT brand allows you to measure the Kh of your seawater with precision. Allows you to take 100 to 200 measurements.
Micron Bag in 200 micron fabrics with a diameter of 10cm and a height of 30cm
This new coral concentrate contains both liquid and solid elements, providing food for SPS as well as various soft corals. Does not increase PO4 or NO3.
KORALLEN-ZUCHT cyano clean is a special strain of bacteria that competes with cyanobacteria .
Special food for sponges, giant clams and tunicates.
Helanthium tenellum 'Green' is a grassy plant ideal for creating a natural, dense carpet in a freshwater aquarium. Unlike the classic variety, this 'Green' version retains a vibrant green hue, even under strong lighting . It forms a compact and attractive plant carpet thanks to its numerous branches. Easy to maintain, it does not require complex care and grows slowly, thus limiting the need for pruning. For optimal development, a CO2 system and nutrient- rich soil are recommended. Whether for a nano aquarium or a large tank, this plant elegantly enhances the foreground.
Tropica 's Rotala wallichii is an exceptional stem plant for enthusiasts who love challenges... and rewards. With its finely cut foliage and spectacular pinkish-red color in good lighting, it transforms an aquarium background into a living tableau. It grows up to 30 cm tall and offers a magnificent contrast with surrounding green plants. Very decorative when planted in groups, it requires strong lighting and a well-established CO2 system . Soft, slightly acidic water and good nutrients are also essential to reveal its full potential. A true star for well-maintained tanks.
Hottonia palustris , or Marsh Hottonia, is an aquarium plant with light and very graphic foliage . Native to Europe and Asia, it is perfect for creating a soft transition between low and tall plants. With its bright light green stems and finely cut leaves, it immediately brings a natural and airy effect to the decor. Undemanding, it grows slowly but surely, and its maintenance remains easy even for beginners. It can reach up to 30 cm in height and is ideally placed in the middle or background zone in nano tanks. It grows well without CO2, although a small contribution can boost its density. A beautiful plant, discreet but full of charm.
What they think about it
(and they are right...)
Nicolas M.
- (Translated review)
Patrick L.
Received the bonsai version instead of the h'ra version. Impossible to have a real opinion as a result... (Translated review)