Description

Hornwort is a plant without true roots, with whorls of very fine, branched leaves along a stem that can exceed a metre. It can be left floating or anchored with a weight, but never buried. It grows explosively and is among the best plants for stabilising a new tank or for a breeding tank, where its tangle protects fry from the adults.
Scientific name
Ceratophyllum demersum
Position
Rear
Difficulty
Easy
Natural grow
High
Max height
60 cm

🌊 Water parameters

pH
6 - 8
GH
5 - 20
Temperature
15 - 28 °C
Current
Low or moderate

Requirements

Light requirements
Low
Light spectrum requirements
6000 - 8000 (Kelvin)
Require CO2
no
Soil requirements
Floating

Habitats

Sources

  • GBIF
    GBIF Secretariat (2026). GBIF Backbone Taxonomy. Checklist dataset. https://doi.org/10.15468/39omei. Consultado vía GBIF.org, 2026-08. Ceratophyllum demersum.

Taxonomy verified.

The aquarium care values (light, substrate, CO2 and water ranges) have no citable source: GBIF supports the taxonomy and distribution, not the cultivation. A source for plants is still to be agreed.