Hornwort - Ceratophyllum Spp.

Ceratophyllum demersum, commonly known as Hornwort, is a fast-growing and highly adaptable aquatic plant from the genus Ceratophyllum. It features long, branching stems covered in fine, needle-like leaves that create a soft, bushy appearance in the aquarium. Its coloration ranges from bright to deep green depending on lighting and nutrient levels, and it can be used either floating or loosely anchored in the substrate for a more structured look.

This plant is well-known for its hardiness and rapid growth, making it an excellent choice for beginners and experienced aquarists alike. Hornwort helps absorb excess nutrients, contributing to improved water quality and reducing algae growth. It also provides excellent cover for fry, shrimp, and shy fish, making it especially valuable in breeding or community tanks.

One of its most useful traits is its ability to thrive in a wide range of conditions without the need for CO₂ injection. It grows quickly under moderate lighting and can tolerate cooler temperatures than many other aquatic plants. However, due to its fast growth, regular trimming may be needed to prevent it from taking over the tank. It may also shed needles when first introduced or if conditions change, but this typically stabilizes once it acclimates.

Care Information:

• Tank Size: Any
• Lighting: Low to high (moderate recommended for best growth)
• CO₂: Not required
• Temperature: 59–86°F (15–30°C)
• pH: 6.0–8.0
• Placement: Floating or background (can be loosely anchored)
• Growth Rate: Fast
• Care Level: Easy
• Propagation: Stem cuttings or natural fragmentation

Summary: A hardy, fast-growing plant that improves water quality and provides excellent cover—perfect for beginners, breeding tanks, or anyone looking for a low-maintenance addition.