Ceratophyllum demersum (also known as Hornwort, rigid hornwort, coon's tail or coontail) is a free-floating aquarium plant that has no roots, but it can still be planted in the bottom of an aquarium. Stems can grow up to 80 cm tall and 5 cm wide. It has lateral shoots which give it an attractive, compact appearance.
- The picture shows a lead weight at the bottom of this plant but it's for display purposes only. They no longer are sent with a weight.
- Your demersum will arrive as 2-3 detached stems - the sponge in the picture hides the fact it's 2-3 stems that are separate from one another.
- This plant has no roots.
- When the stems arrive with you, remove any sponge and elastic band (if it arrives with them) and push stems into your substrate with tweezers until they anchor (minimum 5cm deep). This plant will try and float (as it does in nature).
- In addition, as it is a true free-floating aquatic plant (only grown underwater) there are chances of snails or snail eggs. We buy from European stock and pesticides are never used. Whilst we do our very best to remove any snails we see, we wanted to make you aware this is a possibility.
In a planted aquarium this plant appears to drop all its leaves when exposed to products designed to kill snails. The stems can recover relatively quickly, growing new leaves within a few weeks.