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Hornwort

Ceratophyllum demersum · family Ceratophyllaceae

Hornwort (Ceratophyllum demersum) — aquarium plant
Wikipedia / Various contributors / CC BY-SA
Light
Low
CO₂
Not required
Temperature
10–28 °C
pH
6–9
Hardness
5–30 °dGH
Growth rate
Fast
Height
up to 100 cm
Placement
Floating
Root feeder
No

Pros and cons

  • Grows almost anywhere — even in cold water
  • Soaks up huge amounts of nitrate
  • Ideal fry shelter
  • No roots — easy to move
  • Can 'shed' — small fragments drop to the bottom
  • Blocks light from other plants
  • Has no roots — can't be anchored decoratively

Description

Has no roots — drifts in the water column. One of the toughest species: tolerates cold, hard water, no fertilization.

Care

Just drop it in the water. You can weigh down the bottom end if desired, but it's not necessary.

FAQ

Можно ли посадить роголистник в грунт?
Нет, у него нет корней. Это плавающее растение. Можно закрепить грузом на дне для эстетики.
Goldie editorial team — collective profile photo
AuthorGoldie Editorial

Goldie editorial team

Practising aquarists with a combined 30+ years of experience · Biologists and editors, fact-checking against FishBase and Seriously Fish · Every piece is reviewed by a qualified ichthyologist before publication

Goldie Science Board — collective scientific review panel
Reviewed byGoldie Science Board

Scientific board — ichthyologists and veterinarians

Ichthyologists and veterinarians with university degrees · Reference FishBase, Seriously Fish and peer-reviewed literature · Sign every reviewed article with their credentials shown

Sources

  1. Wikipedia: Ceratophyllum demersum · Wikipedia · 2026-05-22