Hornwort (Ceratophyllum demersum) Stem Bundle
Easy to care for, requires no CO2, and grows quickly in both freshwater fish tanks and outdoor ponds.
- Lighting: Adaptable to low to high light conditions
- Placement: Floating
- Color: Green (darkens with brighter light and becomes more bushy)
- Growth Rate: Fast
- Max Size: Up to 14+ inches
- Propagation: Cut stems for easy reproduction
- Recommended Fertilizer: Not specified
| Feature | Detail |
|---|---|
| Care Difficulty | Easy |
| CO2 Required | No |
| Light Requirement | Low to high |
| Color | Green (darkens with more light) |
| Max Size | 14+ inches |
| Propagation Method | Stem cutting |
*Hornwort is delicate and appears dark when shipped. Exposure to brighter light will darken the color and promote denser, bushier growth.*
FAQ
Does Hornwort require CO2 for growth?
No, Hornwort does not require CO2 to grow.
How fast does Hornwort grow?
Hornwort grows at a very fast rate, making it ideal for quickly establishing plant coverage in tanks or ponds.
Can Hornwort be used in outdoor ponds?
Yes, Hornwort is commonly used in outdoor ponds due to its fast growth and ability to absorb excess nutrients from the water.




Mary Hamilton –
Installed the Hornwort in my 55-gallon tank last week. It grew rapidly and covered the surface within two weeks. The plant stayed green and healthy even with low lighting. I cut a few stems and planted them in different areas—easy to propagate. The color darkened slightly after a few days of brighter light, which I like because it made the plant look fuller.
Warren Springer –
Grew Hornwort in a pond with mixed lighting. It adapted well to both low and high light. The stems spread quickly and helped reduce algae. I didn’t add fertilizer, and it still thrived. A bit delicate at first, but once settled, it’s very resilient.
Lily Martin –
Used this bundle in a community tank with fish. The plant stayed floating and didn’t interfere with fish movement. It grew fast and provided natural cover. After a few weeks, I cut off a section and replanted it—easy process. The plant looks denser now with more light.