Stem · Background
Hornwort
Ceratophyllum demersum
BeginnerLight · lowCO₂ · low
Type
Stem
Placement
Background
Max height
24″
Light need
low
CO₂ need
low
Temperature
59–86°F
Notes
Fast-growing nitrate sponge. Sheds needles when stressed — vacuum the bottom after planting. Floats happily.
More photos
Photos: S.Tanaka / Wikimedia Commons · Javier martin / Wikimedia Commons · Марина Давлетшина / Wikimedia Commons