Ceratophyllum demersum

Ceratophyllum demersum, commonly called hornwort, is one of the most versatile and widespread aquatic plants in aquariums and paludariums. It is characterized by its long, thin stems, covered with needle-like and delicate leaves, which create a natural and very decorative effect. Its growth is rapid and vigorous, making it one of the best allies in tank management.

Main characteristics

• Rapid growth: absorbs nitrates and waste substances, helping to control algae.

• Adaptability: it can be left to float freely or anchored to wood and rocks.

• Resistance: it tolerates a wide range of temperatures (15–30°C) and is also suitable for tanks without CO₂ or intense lighting.

• Biological function: produces oxygen and releases allelopathic substances that inhibit the growth of unwanted algae.

Uses in aquariums and paludariums

• Breeding tanks: the dense structure provides excellent shelter for fry and small invertebrates, increasing their chances of survival.

• Paludariums and natural tanks: ideal for creating floating or rooted green areas, contributing to biological balance and ecosystem stability.

• Support for fish and invertebrates: shrimp and small fish find a perfect environment for grazing and protection among the dense branches.

• Natural filter: improves water quality by reducing harmful substances and ensuring a healthier environment.

Cultivation tips

• It does not need substrate: just put it in water.

• It grows best with good lighting, but also adapts to moderate light conditions.

• It can be easily pruned: cut fragments can give rise to new plants.

• Perfect for established aquariums and for beginners, thanks to its robustness and ease of management.