(Pack of 3 stems)
Ceratophyllum for natural aquariums and ponds: versatile oxygenating plant
Discover Hornwort, a floating, oxygenating plant perfect for the natural aquarium. Water purification, rapid growth, and algae control.
What is Hornwort?
Aquarium Hornwort (Ceratophyllum demersum), the famous "Hornwort," also known as "coontail," is an aquatic plant with very fine, serrated leaves that is highly popular in natural aquariums. It can be used floating or planted and is particularly appreciated in low-tech aquariums, tub ponds, and ponds.
Benefits of Ceratophyllum demersum in a natural aquarium
- Intense oxygenation of the water
- Effective at combating algae by absorbing excess nutrients ("nitrate pump")
- An ideal natural refuge for fry and small fish
- Highly attractive thanks to its fine, delicate foliage
- Compatible with tub ponds and filterless aquariums
- Excellent resistance to high temperatures, ideal for summer tanks
How do you care for Hornwort?
- 🌿 Fast-growing, requiring regular monitoring
- 🌿 Without true roots, it can float freely or be lightly anchored
- 🌿 Prefers medium to high light
- 🌿 Tolerates a wide range of temperatures
- 🌿 Remember to thin it out regularly to prevent excessive density
Our tips for using Hornwort
Hornwort is a must-have for community aquariums, tub ponds, and ponds. Use it floating for rapid water purification or planted for a more structured decorative effect. It naturally pairs with duckweed or Azolla to make the most of the light, or with floating frogbit for added aesthetic appeal.
“Cérato is an irreplaceable plant for oxygenating and purifying a natural aquarium without filtration.” — Mattier
FAQ Ceratophyllum demersum in an aquarium or pond
Can Cérato be planted?
Yes, but it also grows very well while floating freely. As it has no true roots, it only obtains nutrients from the water. Planting it is simply an aesthetic choice.
Is it suitable for an aquarium without a filter?
Absolutely, it oxygenates the water very effectively using light as its only source of energy. The current created by the filter or pump then becomes unnecessary.
Is substrate necessary for Ceratophyllum?
No, this plant grows without substrate, directly in the water. Even a bare bottom suits it!
Can it be mixed with floating plants?
Yes, particularly with duckweed or floating frogbit for a beautiful visual harmony.
Is it invasive?
It can become so if the light is strong enough and nutrients (nitrates and others) are abundant. In that case, simply remove the excess. This way, you remove nitrates from your aquarium, waste-bin pond or pond in plant form!
